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  • Open Access

Characteristics of neutron beams from deuterated targets irradiated by intense sub-ps lasers

P. Martin*, M. Borghesi, and S. Kar†

  • Centre for Light-Matter Interactions, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom

  • *Contact author: p.martin@qub.ac.uk
  • †Contact author: s.kar@qub.ac.uk
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Phys. Rev. Research 7, 033178 – Published 21 August, 2025

DOI: https://doi.org/10.1103/rt4j-ybnb

Abstract

The generation of energetic neutron beams by d(d,n)3He reactions during the interaction of an intense laser with micron-thick deuterated plastic targets is investigated through two-dimensional particle-in-cell simulations equipped with nuclear reaction formalism. The capability of modeling neutron generation along with laser-plasma interaction enables us to identify and quantify multiple distinct and competing regimes of neutron production happening concurrently at the laser irradiated target. The high-energy neutrons are seen to be produced by two different mechanisms of ion acceleration in thick targets, namely, hole boring radiation pressure occurring inside the target bulk and target normal sheath acceleration that occurs on the rear surface of the target. These two regimes contribute two distinctly different components to the final neutron spectrum. Further a narrow-band (2–3 MeV), quasi-isotropic neutron production of significant flux is also seen during the interaction due to shocklike features seeded inside the bulk target plasma by the fast expansion of contaminant species from the target's front and rear surfaces. While the peak neutron energy is found to saturate at high laser intensities, the integrated flux continues to scale favorably.

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References (38)

  1. R. A. Snavely, M. H. Key, S. P. Hatchett, I. E. Cowan, M. Roth, T. W. Phillips, M. A. Stoyer, E. A. Henry, T. C. Sangster, M. S. Singh, S. C. Wilks, A. MacKinnon, A. Offenberger, D. M. Pennington, K. Yasuike, A. B. Langdon, B. F. Lasinski, J. Johnson, M. D. Perry, and E. M. Campbell, Intense high-energy proton beams from petawatt-laser irradiation of solids, Phys. Rev. Lett. 85, 2945 (2000).
  2. P. Mora, Plasma expansion into a vacuum, Phys. Rev. Lett. 90, 185002 (2003).
  3. J. Fuchs, P. Antici, E. D'Humières, E. Lefebvre, M. Borghesi, E. Brambrink, C. A. Cecchetti, M. Kaluza, V. Malka, M. Manclossi, S. Meyroneinc, P. Mora, J. Schreiber, T. Toncian, H. Pépin, and P. Audebert, Laser-driven proton scaling laws and new paths towards energy increase, Nat. Phys. 2, 48 (2006).
  4. A. P. L. Robinson, P. Gibbon, M. Zepf, S. Kar, R. G. Evans, and C. Bellei, Relativistically correct hole-boring and ion acceleration by circularly polarized laser pulses, Plasma Phys. Control. Fusion 51, 024004 (2009).
  5. A. Macchi, F. Cattani, T. V. Liseykina, and F. Cornolti, Laser acceleration of ion bunches at the front surface of overdense plasmas, Phys. Rev. Lett. 94, 165003 (2005).
  6. A. Macchi and C. Benedetti, Ion acceleration by radiation pressure in thin and thick targets, Nucl. Instrum. Methods Phys. Res., Sect. A 620, 41 (2010).
  7. F. Wagner, O. Deppert, C. Brabetz, P. Fiala, A. Kleinschmidt, P. Poth, V. A. Schanz, A. Tebartz, B. Zielbauer, M. Roth, T. Stöhlker, and V. Bagnoud, Maximum proton energy above 85 MeV from the relativistic interaction of laser pulses with micrometer thick CH2 targets, Phys. Rev. Lett. 116, 205002 (2016).
  8. T. Ziegler et al., Laser-driven high-energy proton beams from cascaded acceleration regimes, Nat. Phys. 20, 1211 (2024).
  9. M. Zimmer, S. Scheuren, A. Kleinschmidt, N. Mitura, A. Tebartz, G. Schaumann, T. Abel, T. Ebert, M. Hesse, Ş. Zähter, S. C. Vogel, O. Merle, R. J. Ahlers, S. D. Pinto, M. Peschke, T. Kröll, V. Bagnoud, C. Rödel, and M. Roth, Demonstration of non-destructive and isotope-sensitive material analysis using a short-pulsed laser-driven epi-thermal neutron source, Nat. Commun. 13, 1173 (2022).
  10. E. Mendoza et al. (n_TOF Collaboration), Measurement and analysis of the Am243 neutron capture cross section at the n_TOF facility at CERN, Phys. Rev. C 90, 034608 (2014).
  11. R. Terlizzi, N. Colonna, P. Colangelo, A. Maiorana, S. Marrone, A. Rainò, G. Tagliente, and V. Variale, Design of an accelerator-based neutron source for neutron capture therapy, Appl. Radiat. Isot. 67, S292 (2009).
  12. S. Kar, A. Green, H. Ahmed, A. Alejo, A. P. L. Robinson, M. Cerchez, R. Clarke, D. Doria, S. Dorkings, J. Fernandez, S. R. Mirfayzi, P. McKenna, K. Naughton, D. Neely, P. Norreys, C. Peth, H. Powell, J. A. Ruiz, J. Swain, O. Willi, and M. Borghesi, Beamed neutron emission driven by laser accelerated light ions, New J. Phys. 18, 053002 (2016).
  13. A. Alejo, H. Ahmed, A. Green, S. R. Mirfayzi, M. Borghesi, and S. Kar, Recent advances in laser-driven neutron sources, Il Nuovo Cimento C 38 188 (2015).
  14. M. Zimmer, T. F. Rösch, S. Scheuren, T. Seupel, T. Jäger, J. Kohl, D. Hofmann, G. Schaumann, and M. Roth, Assessing the potential of upcoming laser-driven neutron sources and their practical applications for industry and society, Eur. Phys. J. Plus 139, 1107 (2024).
  15. S. R. Mirfayzi, M. Gryaznevich, O. Lonsdale, G. Naylor, Y. Takase, and D. Kingham, Recent developments on plasma based neutron sources from microscopic innovations to meter-scale applications, Jpn. J. Appl. Phys. 64, 010002 (2025).
  16. A. Yogo et al., Laser-driven neutron generation realizing single-shot resonance spectroscopy, Phys. Rev. X 13, 011011 (2023).
  17. A. Yogo, S. R. Mirfayzi, Y. Arikawa, Y. Abe, T. Wei, T. Mori, Z. Lan, Y. Hoonoki, D. O. Golovin, K. Koga, Y. Suzuki, M. Kanasaki, S. Fujioka, M. Nakai, T. Hayakawa, K. Mima, H. Nishimura, S. Kar, and R. Kodama, Single shot radiography by a bright source of laser-driven thermal neutrons and x-rays, Appl. Phys. Express 14, 106001 (2021).
  18. K. Mima, A. Yogo, S. R. Mirfayzi, Z. Lan, Y. Arikawa, Y. Abe, and H. Nishimura, Laser-driven neutron source and nuclear resonance absorption imaging at ILE, Osaka University: Review, Appl. Opt. 61, 2398 (2022).
  19. A. Alejo et al., High flux, beamed neutron sources employing deuteron-rich ion beams from DO2-ice layered targets, Plasma Phys. Control. Fusion 59, 064004 (2017).
  20. A. Alejo et al., Stabilized radiation pressure acceleration and neutron generation in ultrathin deuterated foils, Phys. Rev. Lett. 129, 114801 (2022).
  21. Y. L. Yao, S. K. He, Z. Lei, T. Ye, Y. Xie, Z. G. Deng, B. Cui, W. Qi, L. Yang, S. P. Zhu, X. T. He, W. M. Zhou, and B. Qiao, High-flux neutron generator based on laser-driven collisionless shock acceleration, Phys. Rev. Lett. 131, 025101 (2023).
  22. V. Horný, S. N. Chen, X. Davoine, V. Lelasseux, L. Gremillet, and J. Fuchs, High-flux neutron generation by laser-accelerated ions from single- and double-layer targets, Sci. Rep. 12, 19767 (2022) .
  23. J. Derouillat, A. Beck, F. Pérez, T. Vinci, M. Chiaramello, A. Grassi, M. Flé, G. Bouchard, I. Plotnikov, N. Aunai, J. Dargent, C. Riconda, and M. Grech, Smilei: A collaborative, open-source, multi-purpose particle-in-cell code for plasma simulation, Comput. Phys. Commun. 222, 351 (2018).
  24. D. P. Higginson, A. Link, and A. Schmidt, A pairwise nuclear fusion algorithm for weighted particle-in-cell plasma simulations, J. Comput. Phys. 388, 439 (2019).
  25. Y. Yang, C. Lv, W. Sun, X. Ban, Q. Liu, Z. Deng, W. Qi, G. Yang, X. Zhang, F. Wan, Z. Wang, B. Zhao, J. Li, and W. Zhou, Neutron generation enhanced by a femtosecond laser irradiating on multi-channel target, Front. Phys. 11, 1189755 (2023).
  26. A. Alejo et al., Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions, Nucl. Instrum. Methods Phys. Res. Sect. A 829, 176 (2016).
  27. T. Ditmire, J. Zweiback, V. P. Yanovsky, T. E. Cowan, G. Hays, and K. B. Wharton, Nuclearfusion from explosions of femtosecond laser-heated deuterium clusters, Nature (London) 398, 489 (1999).
  28. F. Lindau, O. Lundh, A. Persson, P. McKenna, K. Osvay, D. Batani, and C.-G. Wahlström, Laser-accelerated protons with energy-dependent beam direction, Phys. Rev. Lett. 95, 175002 (2005).
  29. O. Lundh, F. Lindau, A. Persson, C.-G. Wahlström, P. McKenna, and D. Batani, Influence of shock waves on laser-driven proton acceleration, Phys. Rev. E 76, 026404 (2007).
  30. A. Sunahara, T. Asahina, H. Nagatomo, R. Hanayama, K. Mima, H. Tanaka, Y. Kato, and S. Nakai, Efficient laser acceleration of deuteron ions through optimization of pre-plasma formation for neutron source development, Plasma Phys. Control. Fusion 61, 025002 (2019).
  31. D. Haberberger, S. Tochitsky, F. Fiuza, C. Gong, R. A. Fonseca, L. O. Silva, W. B. Mori, and C. Joshi, Collisionless shocks in laser-produced plasma generate monoenergetic high-energy proton beams, Nat. Phys. 8, 95 (2012).
  32. A. Macchi, A. S. Nindrayog, and F. Pegoraro, Solitary versus shock wave acceleration in laser-plasma interactions, Phys. Rev. E 85, 046402 (2012).
  33. L. Willingale, G. M. Petrov, A. Maksimchuk, J. Davis, R. R. Freeman, A. S. Joglekar, T. Matsuoka, C. D. Murphy, V. M. Ovchinnikov, A. G. R. Thomas, L. Van Woerkom, and K. Krushelnick, Comparison of bulk and pitcher-catcher targets for laser-driven neutron production, Phys. Plasma 18, 083106 (2011).
  34. D. J. Stark, L. Yin, B. J. Albright, and F. Guo, Effects of dimensionality on kinetic simulations of laser-ion acceleration in the transparency regime, Phys. Plasmas 24, 053103 (2017).
  35. A. Higginson, R. J. Gray, M. King, R. J. Dance, S. D. R. Williamson, N. M. H. Butler, R. Wilson, R. Capdessus, C. Armstrong, J. S. Green, S. J. Hawkes, P. Martin, W. Q. Wei, S. R. Mirfayzi, X. H. Yuan, S. Kar, M. Borghesi, R. J. Clarke, D. Neely, and P. McKenna, Near-100 MeV protons via a laser-driven transparency-enhanced hybrid acceleration scheme, Nat. Commun. 9, 724 (2018).
  36. T. Wang, D. Blackman, K. Chin, and A. Arefiev, Effects of simulation dimensionality on laser-driven electron acceleration and photon emission in hollow microchannel targets, Phys. Rev. E 104, 045206 (2021).
  37. P. Martin, H. Ahmed, D. Doria, M. Cerchez, F. Hanton, D. Gwynne, A. Alejo, J. Fernández-Tobías, J. Green, A. Macchi, D. Maclellan, P. McKenna, J. Á. Ruiz, M. Swantusch, O. Willi, S. Zhai, M. Borghesi, and S. Kar, Narrow-band acceleration of gold ions to GeV energies from ultra-thin foils, Commun. Phys. 7, 3 (2024).
  38. S. Kar and P. Martin, Dataset for “Characteristics of neutron beams from deuterated targets irradiated by intense sub-ps lasers,” Queen's University Belfast (2025), 10.17034/4b114e64-26f0-48e9-9422-11a8d6e739b2.

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Phys. Rev. Research 7, 033178– Published 21 August, 2025
  • Received 29 November 2024
  • Accepted 19 June 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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