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High deuteron and neutron yields from the interaction of a petawatt laser with a cryogenic deuterium jet

Jiao, X. ; Curry, C. B. ; Gauthier, M. ; Chou, H.-G. J. ; Fiuza, F. ; Kim, J. B. ; Phan, D. D. ; McCary, E. ; Galtier, E. C. ; Dyer, G. M. ; Ofori-Okai, B. K. ; Labun, L. ; Labun, O. Z. ; Schoenwaelder, C. ; Roycroft, R. ; Tiwari, G. ; Glenn, G. D. ; Treffert, F. ; Glenzer, S. H. ; Hegelich, B. M. (2023):
High deuteron and neutron yields from the interaction of a petawatt laser with a cryogenic deuterium jet. (Publisher's Version)
In: Frontiers in Physics, 10, Frontiers Media S.A., e-ISSN 2296-424X,
DOI: 10.26083/tuprints-00023123,

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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: High deuteron and neutron yields from the interaction of a petawatt laser with a cryogenic deuterium jet
Language: English

A compact high-flux, short-pulse neutron source would have applications from nuclear astrophysics to cancer therapy. Laser-driven neutron sources can achieve fluxes much higher than spallation and reactor neutron sources by reducing the volume and time in which the neutron-producing reactions occur by orders of magnitude. We report progress towards an efficient laser-driven neutron source in experiments with a cryogenic deuterium jet on the Texas Petawatt laser. Neutrons were produced both by laser-accelerated multi-MeV deuterons colliding with Be and mixed metallic catchers and by d (d,n)³He fusion reactions within the jet. We observed deuteron yields of 10¹³/shot in quasi-Maxwellian distributions carrying ∼ 8 − 10 % of the input laser energy. We obtained neutron yields greater than 10¹⁰/shot and found indications of a deuteron-deuteron fusion neutron source with high peak flux (> 10²² cm⁻² s⁻¹). The estimated fusion neutron yield in our experiment is one order of magnitude higher than any previous laser-induced dd fusion reaction. Though many technical challenges will have to be overcome to convert this proof-of-principle experiment into a consistent ultra-high flux neutron source, the neutron fluxes achieved here suggest laser-driven neutron sources can support laboratory study of the rapid neutron-capture process, which is otherwise thought to occur only in astrophysical sites such as core-collapse supernova, and binary neutron star mergers.

Journal or Publication Title: Frontiers in Physics
Volume of the journal: 10
Place of Publication: Darmstadt
Publisher: Frontiers Media S.A.
Collation: 12 Seiten
Uncontrolled Keywords: laser-driven neutron source, high-flux neutron source, rapid neutron capture process, laboratory astro-nuclear physics experiment, laser-driven fusion, laser-driven ion source
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 24 Jan 2023 13:17
Last Modified: 02 Feb 2023 09:14
DOI: 10.26083/tuprints-00023123
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-231239
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/23123
PPN: 504214489
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