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.
In: Frontiers in Physics, 2023, 10
doi: 10.26083/tuprints-00023123
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | 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. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | High deuteron and neutron yields from the interaction of a petawatt laser with a cryogenic deuterium jet |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2023 |
| Verlag: | Frontiers Media S.A. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Frontiers in Physics |
| Jahrgang/Volume einer Zeitschrift: | 10 |
| Kollation: | 12 Seiten |
| DOI: | 10.26083/tuprints-00023123 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23123 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | 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. |
| Freie Schlagworte: | laser-driven neutron source, high-flux neutron source, rapid neutron capture process, laboratory astro-nuclear physics experiment, laser-driven fusion, laser-driven ion source |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-231239 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Kernphysik |
| Hinterlegungsdatum: | 24 Jan 2023 13:17 |
| Letzte Änderung: | 31 Jan 2023 08:59 |
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