Trident laser

Last updated
An aluminum foil irradiated by the Trident Laser (entering from the right), producing x-rays, hot electrons, and an ion beam, which cannot be seen directly. The plasma from the intense interaction is visible as the two cones jetting out in either direction from the target (center), expand into the vacuum. X-ray produced plasmas on the surrounding surfaces create glowing structures. The green light illuminating the scene is from the second harmonic light (527 nm) produced from the short-pulse beam's fundamental wavelength (1053 nm) at the target/plasma/laser interface a few tens of micrometres in front of the target. Alfoil.jpg
An aluminum foil irradiated by the Trident Laser (entering from the right), producing x-rays, hot electrons, and an ion beam, which cannot be seen directly. The plasma from the intense interaction is visible as the two cones jetting out in either direction from the target (center), expand into the vacuum. X-ray produced plasmas on the surrounding surfaces create glowing structures. The green light illuminating the scene is from the second harmonic light (527 nm) produced from the short-pulse beam's fundamental wavelength (1053 nm) at the target/plasma/laser interface a few tens of micrometres in front of the target.

The Trident Laser was a high power, sub-petawatt class, solid-state laser facility located at Los Alamos National Laboratory (LANL website), in Los Alamos, New Mexico, originally built in the late 1980s for Inertial confinement fusion (ICF) research by KMS Fusion, founded by Kip Siegel, in Ann Arbor, Michigan, it was later moved to Los Alamos in the early 1990s [1] to be used in ICF and materials research. The Trident Laser has been decommissioned, with final experiments in 2017, and is now in storage at the University of Texas at Austin.

Contents

The Trident Laser consisted of three main laser chains (A,B, and C) of neodymium glass amplifiers (or Nd:glass), two identical longpulse beams lines, A&B, and a third beamline, C, that could be operated either in longpulse or in chirped pulse amplification (CPA) shortpulse mode. [2] Longpulse beams A and B, were laser chains capable of delivering up to ~500 J at 1054 nm, which were frequency doubled to 527 nm and ~200 J depending on pulse duration; the pulse duration could be varied from 100 ps to 1 μs, and was a unique capability of any large laser in the US (and possibly the world). The third laser chain, beamline C, could produce up to ~200 J at 1054 nm, or could be frequency doubled to 527 nm at ~100 J in the longpulse mode with the same pulse duration variability as beams A and B; or could be used in the Trident enhancement configuration allowing the ~200 J beam to be compressed via CPA to ~600 fs and ~100 J, producing powers on the scale of a quarter petawatt(~200 TW) with a host of laser and plasma diagnostics. [3] A 100 mJ 500 fs probe beamline is also available.

The 200TW shortpulse ultra high-intensity laser system is currently a world record holder in ion acceleration energy with Target Normal Sheath Acceleration mechanism, [4] producing protons at 58.5 MeV from a flat-foil, [5] beating the record of the NOVA Petawatt laser back in 1999; [6] and 67.5 MeV protons from micro-cone targets. [7] [8] Trident delivers Petawatt performance at a fifth of the power. The 200TW or C beam is capable of focusing down to less than 10 micrometers in diameter to reach laser field intensities (irradiance) of ~2x1020 W/cm2, producing protons over 50 MeV [9] as well as high quality, high energy xrays. [10] The interaction can be diagnosed with a Backscatter Focal Diagnostics [11] similar to a Full Aperture Back-scatter (FABS) [12] diagnostic at the National Ignition Facility. A new front-end for the laser employs a 2nd order cleaning technique, dubbed SPOPA (for Short-Pulse Optical Parametric Amplification) cleaning, which reduces the contrast to better than 10−9 ASE intensity ratio, making it one of the cleanest ultra high-intensity high-power laser in the world. [13]

The laser was being used for Fast Ignition ICF research, warm dense matter experiments, materials dynamics studies, and laser-matter interaction research, including particle acceleration, x-ray backlighting and laser-plasma instabilities (LPI).

For more information see the Trident User Facility Website: Trident User Facility, Los Alamos National Laboratory, see the references below and these articles using the laser: [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33]

See also

Related Research Articles

<span class="mw-page-title-main">Plasma stability</span> Degree to which disturbing a plasma system at equilibrium will destabilize it

In plasma physics, plasma stability concerns the stability properties of a plasma in equilibrium and its behavior under small perturbations. The stability of the system determines if the perturbations will grow, oscillate, or be damped out. It is an important consideration in topics such as nuclear fusion and astrophysical plasma.

<span class="mw-page-title-main">Ion source</span> Device that creates charged atoms and molecules (ions)

An ion source is a device that creates atomic and molecular ions. Ion sources are used to form ions for mass spectrometers, optical emission spectrometers, particle accelerators, ion implanters and ion engines.

Plasma diagnostics are a pool of methods, instruments, and experimental techniques used to measure properties of a plasma, such as plasma components' density, distribution function over energy (temperature), their spatial profiles and dynamics, which enable to derive plasma parameters.

<span class="mw-page-title-main">Aneutronic fusion</span> Form of fusion power

Aneutronic fusion is any form of fusion power in which very little of the energy released is carried by neutrons. While the lowest-threshold nuclear fusion reactions release up to 80% of their energy in the form of neutrons, aneutronic reactions release energy in the form of charged particles, typically protons or alpha particles. Successful aneutronic fusion would greatly reduce problems associated with neutron radiation such as damaging ionizing radiation, neutron activation, reactor maintenance, and requirements for biological shielding, remote handling and safety.

Plasma acceleration is a technique for accelerating charged particles, such as electrons or ions, using the electric field associated with electron plasma wave or other high-gradient plasma structures. These plasma acceleration structures are created using either ultra-short laser pulses or energetic particle beams that are matched to the plasma parameters. The technique offers a way to build affordable and compact particle accelerators.

<span class="mw-page-title-main">AWAKE</span>

The AWAKE facility at CERN is a proof-of-principle experiment, which investigates wakefield plasma acceleration using a proton bunch as a driver, a world-wide first. It aims to accelerate a low-energy witness bunch of electrons from 15 to 20 MeV to several GeV over a short distance by creating a high acceleration gradient of several GV/m. Particle accelerators currently in use, like CERN's LHC, use standard or superconductive RF-cavities for acceleration, but they are limited to an acceleration gradient in the order of 100 MV/m.

<span class="mw-page-title-main">Self-focusing</span>

Self-focusing is a non-linear optical process induced by the change in refractive index of materials exposed to intense electromagnetic radiation. A medium whose refractive index increases with the electric field intensity acts as a focusing lens for an electromagnetic wave characterized by an initial transverse intensity gradient, as in a laser beam. The peak intensity of the self-focused region keeps increasing as the wave travels through the medium, until defocusing effects or medium damage interrupt this process. Self-focusing of light was discovered by Gurgen Askaryan.

<span class="mw-page-title-main">Particle accelerator</span> Research apparatus for particle physics

A particle accelerator is a machine that uses electromagnetic fields to propel charged particles to very high speeds and energies, and to contain them in well-defined beams.

A plasma railgun is a linear accelerator which, like a projectile railgun, uses two long parallel electrodes to accelerate a "sliding short" armature. However, in a plasma railgun, the armature and ejected projectile consists of plasma, or hot, ionized, gas-like particles, instead of a solid slug of material. Scientific plasma railguns are typically operated in vacuum and not at air pressure. They are of value because they produce muzzle velocities of up to several hundreds of kilometers per second. Because of this, these devices have applications in magnetic confinement fusion (MCF), magneto-inertial fusion (MIF), high energy density physics research (HEDP), laboratory astrophysics, and as a plasma propulsion engine for spacecraft.

Chandrashekhar "Chan" Janardan Joshi is an Indian–American experimental plasma physicist. He is known for his pioneering work in plasma-based particle acceleration techniques for which he won the 2006 James Clerk Maxwell Prize for Plasma Physics and the 2023 Hannes Alfvén Prize.

<span class="mw-page-title-main">John H. Malmberg</span> American physicist

John Holmes Malmberg was an American plasma physicist and a professor at the University of California, San Diego. He was known for making the first experimental measurements of Landau damping of plasma waves in 1964, as well as for his research on non-neutral plasmas and the development of the Penning–Malmberg trap.

Phillip A. Sprangle is an American physicist who specializes in the applications of plasma physics. He is known for his work involving the propagation of high-intensity laser beams in the atmosphere, the interaction of ultra-short laser pulses from high-power lasers with matter, nonlinear optics and nonlinear plasma physics, free electron lasers, and lasers in particle acceleration.

Keith Howard Burrell is an American plasma physicist.

Jürgen Meyer-ter-Vehn is a German theoretical physicist who specializes in laser-plasma interactions at the Max Planck Institute for Quantum Optics. He published under the name Meyer until 1973.

<span class="mw-page-title-main">Penning–Malmberg trap</span> Electromagnetic device used to confine particles of a single sign of charge

The Penning–Malmberg trap, named after Frans Penning and John Malmberg, is an electromagnetic device used to confine large numbers of charged particles of a single sign of charge. Much interest in Penning–Malmberg (PM) traps arises from the fact that if the density of particles is large and the temperature is low, the gas will become a single-component plasma. While confinement of electrically neutral plasmas is generally difficult, single-species plasmas can be confined for long times in PM traps. They are the method of choice to study a variety of plasma phenomena. They are also widely used to confine antiparticles such as positrons and antiprotons for use in studies of the properties of antimatter and interactions of antiparticles with matter.

Toshiki Tajima is a Japanese theoretical plasma physicist known for pioneering the laser wakefield acceleration technique with John M. Dawson in 1979. The technique is used to accelerate particles in a plasma and was experimentally realized in 1994, for which Tajima received several awards such as the Nishina Memorial Prize (2006), the Enrico Fermi Prize (2015), the Robert R. Wilson Prize (2019), the Hannes Alfvén Prize (2019) and the Charles Hard Townes Award (2020).

<span class="mw-page-title-main">Victor Malka</span> French physicist (born 1960)

Victor Malka is a French plasma physicist and a pioneer in laser plasma acceleration. In 2004, Malka demonstrated that high energy monoenergetic electron beams could be generated using the technique of laser wakefield acceleration, and subsequently used them to develop compact X-ray and gamma radiation sources with applications in medicine, security technology and phase-contrast imaging. For these contributions to the field, he was awarded the IEEE Particle Accelerator Science and Technology Award in 2007, the Julius Springer Prize for Applied Physics in 2017, and the Hannes Alfvén Prize in 2019.

Warren Bicknell Mori is an American computational plasma physicist and a professor at the University of California, Los Angeles. He was awarded the 2020 James Clerk Maxwell Prize for Plasma Physics for his contributions to the theory and computer simulations of non-linear processes in plasma-based acceleration using kinetic theory, as well as for his research in relativistically intense lasers and beam-plasma interactions.

A plasma mirror is an optical mechanism which can be used to specularly reflect high intensity ultrafast laser beams where nonlinear optical effects prevent the usage of conventional mirrors and to improve laser temporal contrast. If a sufficient intensity is reached, a laser beam incident on a substrate will cause the substrate to ionize and the resulting plasma will reflect the incoming beam with the qualities of an ordinary mirror. A single plasma mirror can be used only one time, as during the interaction the beam ionizes the subtrate and destroys it.

Louise Willingale is a laser physicist at the University of Michigan and associate director of the National Science Foundation (NSF) ZEUS facility.

References

  1. Moncur, N. K.; Johnson, R. P.; Watt, R. G.; Gibson, R. B. (20 July 1995). "Trident: a versatile high-power Nd:glass laser facility for inertial confinement fusion experiments". Applied Optics. 34 (21): 4274–83. Bibcode:1995ApOpt..34.4274M. doi:10.1364/AO.34.004274. PMID   21052257.
  2. Trident as an Ultrahigh Irradiance Laser, R.P Johnson et al., LA-UR-9541 (1995), Los Alamos National Laboratory
  3. Batha, S. H.; Aragonez, R.; Archuleta, F. L.; Archuleta, T. N.; Benage, J. F.; Cobble, J. A.; Cowan, J. S.; Fatherley, V. E.; Flippo, K. A.; Gautier, D. C.; Gonzales, R. P.; Greenfield, S. R.; Hegelich, B. M.; Hurry, T. R.; Johnson, R. P.; Kline, J. L.; Letzring, S. A.; Loomis, E. N.; Lopez, F. E.; Luo, S. N.; Montgomery, D. S.; Oertel, J. A.; Paisley, D. L.; Reid, S. M.; Sanchez, P. G.; Seifter, A.; Shimada, T.; Workman, J. B. (1 January 2008). "TRIDENT high-energy-density facility experimental capabilities and diagnostics". Review of Scientific Instruments. 79 (10): 10F305. Bibcode:2008RScI...79jF305B. doi:10.1063/1.2972020. PMID   19044618.
  4. Roth, M.; Schollmeier, M. (16 February 2016). "Ion Acceleration—Target Normal Sheath Acceleration" (PDF). CERN Yellow Reports. 1: 231. doi:10.5170/CERN-2016-001.231. S2CID   32086240 . Retrieved 22 March 2022.
  5. Flippo, K. A.; Workman, J.; Gautier, D. C.; Letzring, S.; Johnson, R. P.; Shimada, T. (1 January 2008). "Scaling laws for energetic ions from the commissioning of the new Los Alamos National Laboratory 200 TW Trident laser". Review of Scientific Instruments. 79 (10): 10E534. Bibcode:2008RScI...79jE534F. doi:10.1063/1.2987678. PMID   19044515.
  6. Snavely, R.; Key, M.; Hatchett, S.; Cowan, T.; Roth, M.; Phillips, T.; Stoyer, M.; Henry, E.; Sangster, T.; Singh, M.; Wilks, S.; MacKinnon, A.; Offenberger, A.; Pennington, D.; Yasuike, K.; Langdon, A.; Lasinski, B.; Johnson, J.; Perry, M.; Campbell, E. (1 October 2000). "Intense High-Energy Proton Beams from Petawatt-Laser Irradiation of Solids". Physical Review Letters. 85 (14): 2945–2948. Bibcode:2000PhRvL..85.2945S. doi:10.1103/PhysRevLett.85.2945. PMID   11005974.
  7. Flippo, K. A.; d'Humières, E.; Gaillard, S. A.; Rassuchine, J.; Gautier, D. C.; Schollmeier, M.; Nürnberg, F.; Kline, J. L.; Adams, J.; Albright, B.; Bakeman, M.; Harres, K.; Johnson, R. P.; Korgan, G.; Letzring, S.; Malekos, S.; Renard-LeGalloudec, N.; Sentoku, Y.; Shimada, T.; Roth, M.; Cowan, T. E.; Fernández, J. C.; Hegelich, B. M. (1 January 2008). "Increased efficiency of short-pulse laser-generated proton beams from novel flat-top cone targets". Physics of Plasmas. 15 (5): 056709. Bibcode:2008PhPl...15e6709F. doi:10.1063/1.2918125.
  8. Gaillard, S. A.; Kluge, T.; Flippo, K. A.; Bussmann, M.; Gall, B.; Lockard, T.; Geissel, M.; Offermann, D. T.; Schollmeier, M.; Sentoku, Y.; Cowan, T. E. (1 January 2011). "Increased laser-accelerated proton energies via direct laser-light-pressure acceleration of electrons in microcone targets". Physics of Plasmas. 18 (5): 056710. Bibcode:2011PhPl...18e6710G. doi: 10.1063/1.3575624 .
  9. Flippo, K. A.; Workman, J.; Gautier, D. C.; Letzring, S.; Johnson, R. P.; Shimada, T. (1 January 2008). "Scaling laws for energetic ions from the commissioning of the new Los Alamos National Laboratory 200 TW Trident laser". Review of Scientific Instruments. 79 (10): 10E534. Bibcode:2008RScI...79jE534F. doi:10.1063/1.2987678. PMID   19044515.
  10. Workman, J.; Cobble, J.; Flippo, K.; Gautier, D. C.; Letzring, S. (1 January 2008). "High-energy, high-resolution x-ray imaging on the Trident short-pulse laser facility". Review of Scientific Instruments. 79 (10): 10E905. Bibcode:2008RScI...79jE905W. doi:10.1063/1.2965012. PMID   19044560.
  11. Gautier, D. C.; Flippo, K. A.; Letzring, S. A.; Shimada, J. Workman T.; Johnson, R. P.; Hurry, T. R.; Gaillard, S. A.; Hegelich, B. M. (1 January 2008). "A novel backscatter focus diagnostic for the TRIDENT 200 TW laser". Review of Scientific Instruments. 79 (10): 10F547. Bibcode:2008RScI...79jF547G. doi:10.1063/1.2979881. PMID   19044689.
  12. Froula, D. H.; Bower, D.; Chrisp, M.; Grace, S.; Kamperschroer, J. H.; Kelleher, T. M.; Kirkwood, R. K.; MacGowan, B.; McCarville, T.; Sewall, N.; Shimamoto, F. Y.; Shiromizu, S. J.; Young, B.; Glenzer, S. H. (1 January 2004). "Full-aperture backscatter measurements on the National Ignition Facility". Review of Scientific Instruments. 75 (10): 4168. Bibcode:2004RScI...75.4168F. doi:10.1063/1.1789592.
  13. Shah, Rahul C.; Johnson, Randall P.; Shimada, Tsutomu; Flippo, Kirk A.; Fernandez, Juan C.; Hegelich, B. M. (1 August 2009). "High-temporal contrast using low-gain optical parametric amplification". Optics Letters. 34 (15): 2273–5. Bibcode:2009OptL...34.2273S. doi:10.1364/OL.34.002273. OSTI   960915. PMID   19649068.
  14. Schaeffer, D. B.; Everson, E. T.; Winske, D.; Constantin, C. G.; Bondarenko, A. S.; Morton, L. A.; Flippo, K. A.; Montgomery, D. S.; Gaillard, S. A.; Niemann, C. (1 January 2012). "Generation of magnetized collisionless shocks by a novel, laser-driven magnetic piston". Physics of Plasmas. 19 (7): 070702. Bibcode:2012PhPl...19g0702S. doi:10.1063/1.4736846.
  15. Bartal, Teresa; Foord, Mark E.; Bellei, Claudio; Key, Michael H.; Flippo, Kirk A.; Gaillard, Sandrine A.; Offermann, Dustin T.; Patel, Pravesh K.; Jarrott, Leonard C.; Higginson, Drew P.; Roth, Markus; Otten, Anke; Kraus, Dominik; Stephens, Richard B.; McLean, Harry S.; Giraldez, Emilio M.; Wei, Mingsheng S.; Gautier, Donald C.; Beg, Farhat N. (4 December 2011). "Focusing of short-pulse high-intensity laser-accelerated proton beams". Nature Physics. 8 (2): 139–142. Bibcode:2012NatPh...8..139B. doi: 10.1038/NPHYS2153 .
  16. Schaeffer, D B; Montgomery, D S; Bondarenko, A S; Morton, L A; Johnson, R P; Shimada, T; Constantin, C G; Everson, E T; Letzring, S A; Gaillard, S A; Flippo, K A; Glenzer, S H; Niemann, C (7 February 2012). "Thomson Scattering Measurements of Temperature and Density in a Low-Density, Laser-Driven Magnetized Plasma". Journal of Instrumentation. 7 (2): P02002. Bibcode:2012JInst...7.2002S. doi:10.1088/1748-0221/7/02/P02002. S2CID   250667598.
  17. Bartal, T.; Flippo, K. A.; Gaillard, S. A.; Offermann, D. T.; Foord, M. E.; Bellei, C.; Patel, P. K.; Key, M. H.; Stephens, R. B.; McLean, H. S.; Jarrott, L. C.; Beg, F. N. (1 November 2011). "Proton Focusing Characteristics Relevant to Fast Ignition". IEEE Transactions on Plasma Science. 39 (11): 2818–2819. Bibcode:2011ITPS...39.2818B. doi:10.1109/TPS.2011.2155682. OSTI   1183515. S2CID   38322491.
  18. Flippo, Kirk A.; Gaillard, Sandrine A.; Cowan, Joseph S.; Gautier, D. Cort; Mucino, J. Eduardo; Lowenstern, Mariano E. (1 November 2011). "Overcritical to Underdense Plasma in Under 1 μm: 150 TW Laser-Thin-Target Interactions for Particle Acceleration". IEEE Transactions on Plasma Science. 39 (11): 2428–2429. Bibcode:2011ITPS...39.2428F. doi:10.1109/TPS.2011.2163426. S2CID   41645210.
  19. Niemann, Christoph; Bondarenko, Anton S.; Constantin, Carmen G.; Everson, Erik T.; Flippo, Kirk A.; Gaillard, Sandrine A.; Johnson, Randall P.; Letzring, Samuel A.; Montgomery, David S.; Morton, Lucas A.; Schaeffer, Derek B.; Shimada, Tsutomu; Winske, Dan (1 November 2011). "Collisionless Shocks in a Large Magnetized Laser-Plasma Plume". IEEE Transactions on Plasma Science. 39 (11): 2406–2407. Bibcode:2011ITPS...39.2406N. doi:10.1109/TPS.2011.2162007. S2CID   28559709.
  20. Offermann, D. T.; Flippo, K. A.; Cobble, J.; Schmitt, M. J.; Gaillard, S. A.; Bartal, T.; Rose, D. V.; Welch, D. R.; Geissel, M.; Schollmeier, M. (1 January 2011). "Characterization and focusing of light ion beams generated by ultra-intensely irradiated thin foils at the kilojoule scale". Physics of Plasmas. 18 (5): 056713. Bibcode:2011PhPl...18e6713O. doi:10.1063/1.3589476. OSTI   1254984.
  21. Workman, J.; Cobble, J.; Flippo, K.; Gautier, D. C.; Montgomery, D. S.; Offermann, D. T. (1 January 2010). "Phase-contrast imaging using ultrafast x-rays in laser-shocked materials". Review of Scientific Instruments. 81 (10): 10E520. Bibcode:2010RScI...81jE520W. doi:10.1063/1.3485109. OSTI   1013598. PMID   21034048.
  22. Offermann, D T; Flippo, K A; Gaillard, S A; Gautier, D C; Letzring, S; Cobble, J C; Wurden, G; Johnson, R P; Shimada, T; Montgomery, D S; Gonzales, R P; Hurry, T; Archuleta, F; Schmitt, M J; Reid, S-M; Bartal, T; Wei, M S; Higginson, D P; Beg, F N; Geissel, M; Schollmeier, M (1 August 2010). "Carbon ion beam focusing using laser irradiated, heated diamond hemispherical shells". Journal of Physics: Conference Series. 244 (2): 022053. Bibcode:2010JPhCS.244b2053O. doi: 10.1088/1742-6596/244/2/022053 .
  23. Roth, M; Alber, I; Bagnoud, V; Brown, C R D; Clarke, R; Daido, H; Fernandez, J; Flippo, K; Gaillard, S; Gauthier, C; Geissel, M; Glenzer, S; Gregori, G; Günther, M; Harres, K; Heathcote, R; Kritcher, A; Kugland, N; LePape, S; Li, B; Makita, M; Mithen, J; Niemann, C; Nürnberg, F; Offermann, D; Otten, A; Pelka, A; Riley, D; Schaumann, G; Schollmeier, M; Schütrumpf, J; Tampo, M; Tauschwitz, A; Tauschwitz, An (1 December 2009). "Proton acceleration experiments and warm dense matter research using high power lasers". Plasma Physics and Controlled Fusion. 51 (12): 124039. Bibcode:2009PPCF...51l4039R. doi:10.1088/0741-3335/51/12/124039. S2CID   119747444.
  24. Henig, A.; Kiefer, D.; Markey, K.; Gautier, D.; Flippo, K.; Letzring, S.; Johnson, R.; Shimada, T.; Yin, L.; Albright, B.; Bowers, K.; Fernández, J.; Rykovanov, S.; Wu, H.-C.; Zepf, M.; Jung, D.; Liechtenstein, V.; Schreiber, J.; Habs, D.; Hegelich, B. (1 July 2009). "Enhanced Laser-Driven Ion Acceleration in the Relativistic Transparency Regime". Physical Review Letters. 103 (4): 045002. Bibcode:2009PhRvL.103d5002H. doi:10.1103/PhysRevLett.103.045002. PMID   19659362. S2CID   25075234.
  25. Kline, J.L.; Montgomery, D.S.; Rousseaux, C.; Baton, S.D.; Tassin, V.; Hardin, R.A.; Flippo, K.A.; Johnson, R.P.; Shimada, T.; Yin, L.; Albright, B.J.; Rose, H.A.; Amiranoff, F. (18 February 2009). "Investigation of stimulated Raman scattering using a short-pulse diffraction limited laser beam near the instability threshold". Laser and Particle Beams. 27 (1): 185. Bibcode:2009LPB....27..185K. doi: 10.1017/S0263034609000251 . OSTI   960939.
  26. Kline, J. L.; Montgomery, D. S.; Flippo, K. A.; Johnson, R. P.; Rose, H. A.; Shimada, T.; Williams, E. A. (1 January 2008). "Using a short-pulse diffraction-limited laser beam to probe filamentation of a random phase plate smoothed beam". Review of Scientific Instruments. 79 (10): 10F551. Bibcode:2008RScI...79jF551K. doi:10.1063/1.2955927. PMID   19044693.
  27. Schollmeier, M.; Becker, S.; Geißel, M.; Flippo, K.; Blažević, A.; Gaillard, S.; Gautier, D.; Grüner, F.; Harres, K.; Kimmel, M.; Nürnberg, F.; Rambo, P.; Schramm, U.; Schreiber, J.; Schütrumpf, J.; Schwarz, J.; Tahir, N.; Atherton, B.; Habs, D.; Hegelich, B.; Roth, M. (1 August 2008). "Controlled Transport and Focusing of Laser-Accelerated Protons with Miniature Magnetic Devices". Physical Review Letters. 101 (5): 055004. Bibcode:2008PhRvL.101e5004S. doi:10.1103/PhysRevLett.101.055004. PMID   18764401.
  28. Schollmeier, M.; Harres, K.; Nürnberg, F.; Blažević, A.; Audebert, P.; Brambrink, E.; Fernández, J. C.; Flippo, K. A.; Gautier, D. C.; Geißel, M.; Hegelich, B. M.; Schreiber, J.; Roth, M. (1 January 2008). "Laser beam-profile impression and target thickness impact on laser-accelerated protons". Physics of Plasmas. 15 (5): 053101. Bibcode:2008PhPl...15e3101S. doi:10.1063/1.2912451.
  29. Kline, J. L.; Shimada, T.; Johnson, R. P.; Montgomery, D. S.; Hegelich, B. M.; Esquibel, D. M.; Flippo, K. A.; Gonzales, R. P.; Hurry, T. R.; Reid, S. L. (1 January 2007). "Short pulse laser train for laser plasma interaction experiments". Review of Scientific Instruments. 78 (8): 083501–083501–5. Bibcode:2007RScI...78h3501K. doi:10.1063/1.2760687. PMID   17764320.
  30. Schollmeier, Marius; Roth, M.; Blazevic, A.; Brambrink, E.; Cobble, J.A.; Fernandez, J.C.; Flippo, K.A.; Gautier, D.C.; Habs, D.; Harres, K.; Hegelich, B.M.; Heßling, T.; Hoffmann, D.H.H.; Letzring, S.; Nürnberg, F.; Schaumann, G.; Schreiber, J.; Witte, K. (1 July 2007). "Laser ion acceleration with micro-grooved targets". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 577 (1–2): 186–190. Bibcode:2007NIMPA.577..186S. doi:10.1016/j.nima.2007.02.052.
  31. Yin, L.; Albright, B. J.; Hegelich, B. M.; Bowers, K. J.; Flippo, K. A.; Kwan, T. J. T.; Fernández, J. C. (1 January 2007). "Monoenergetic and GeV ion acceleration from the laser breakout afterburner using ultrathin targets". Physics of Plasmas. 14 (5): 056706. Bibcode:2007PhPl...14e6706Y. doi:10.1063/1.2436857.
  32. Hegelich, B. M.; Albright, B. J.; Cobble, J.; Flippo, K.; Letzring, S.; Paffett, M.; Ruhl, H.; Schreiber, J.; Schulze, R. K.; Fernández, J. C. (26 January 2006). "Laser acceleration of quasi-monoenergetic MeV ion beams". Nature. 439 (7075): 441–444. Bibcode:2006Natur.439..441H. doi:10.1038/nature04400. PMID   16437109. S2CID   4406238.
  33. FERNÁNDEZ, JUAN C.; HEGELICH, B. MANUEL; COBBLE, JAMES A.; FLIPPO, KIRK A.; LETZRING, SAMUEL A.; JOHNSON, RANDALL P.; GAUTIER, D. CORT; SHIMADA, TSUTOMU; KYRALA, GEORGE A.; WANG, YONGQIANG; WETTELAND, CHRIS J.; SCHREIBER, JÖRG (30 August 2005). "Laser-ablation treatment of short-pulse laser targets: Toward an experimental program on energetic-ion interactions with dense plasmas". Laser and Particle Beams. 23 (3): 267. Bibcode:2005LPB....23..267F. doi:10.1017/S0263034605050287.