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Title: Temporal narrowing of neutrons produced by high-intensity short-pulse lasers

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [3];  [7];  [10];  [6];  [8];  [3];  [11]
  1. UMR 7605 CNRS-CEA-Ecole Polytechnique-Univ. Paris VI, Palaiseau (France); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. UMR 7605 CNRS-CEA-Ecole Polytechnique-Univ. Paris VI, Palaiseau (France); Univ. di Roma "La Sapienza", Roma (Italy)
  3. IFIN-HH (Romania)
  4. Univ. di Roma "La Sapienza", Roma (Italy); INRS-EMT, Varennes, QC (Canada); Istituto Nazionale di Fisica Nucleare, Frascati (Italy)
  5. The Queen's Univ. of Belfast, Belfast (United Kingdom); Institute of Physics of the ASCR, Prague (Czech Republic)
  6. Heinrich Heine Univ. Dusseldorf, Dusseldorf (Germany)
  7. UMR 7605 CNRS-CEA-Ecole Polytechnique-Univ. Paris VI, Palaiseau (France)
  8. The Queen's Univ. of Belfast, Belfast (United Kingdom)
  9. Univ. di Roma "La Sapienza", Roma (Italy)
  10. Institute of Applied Physics, Nizhny Novgorod (Russia)
  11. UMR 7605 CNRS-CEA-Ecole Polytechnique-Univ. Paris VI, Palaiseau (France); Institute of Applied Physics, Nizhny Novgorod (Russia)

The production of neutron beams having short temporal duration is studied using ultraintense laser pulses. Laser-accelerated protons are spectrally filtered using a laser-triggered microlens to produce a short duration neutron pulse via nuclear reactions induced in a converter material (LiF). This produces a ~3 ns duration neutron pulse with 104 n/MeV/sr/shot at 0.56 m from the laser-irradiated proton source. The large spatial separation between the neutron production and the proton source allows for shielding from the copious and undesirable radiation resulting from the laser-plasma interaction. Finally, this neutron pulse compares favorably to the duration of conventional accelerator sources and should scale up with, present and future, higher energy laser facilities to produce brighter and shorter neutron beams for ultrafast probing of dense materials.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; E1127
OSTI ID:
1345339
Alternate ID(s):
OSTI ID: 1203808
Report Number(s):
LLNL-JRNL-674350; PRLTAO
Journal Information:
Physical Review Letters, Vol. 115, Issue 5; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (7)

High flux, beamed neutron sources employing deuteron-rich ion beams from D 2 O-ice layered targets journal April 2017
On the Possibility of Creating a Point-Like Neutron Source journal March 2018
Targets for high repetition rate laser facilities: needs, challenges and perspectives journal January 2017
Laser-Generated Proton Beams for High-Precision Ultra-Fast Crystal Synthesis journal October 2017
Laser-accelerated particle beams for stress testing of materials journal January 2018
New method of a “point-like” neutron source creation based on sharp focusing of high-current deuteron beam onto deuterium-saturated target for neutron tomography journal February 2017
Extreme brightness laser-based neutron pulses as a pathway for investigating nucleosynthesis in the laboratory journal September 2019

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