Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University
To develop the 100-400 MeV quasi-monoenergetic neutron field, we measured neutron and unexpected gamma-ray energy spectra of the 7Li(p,n) reaction with 80-389 MeV protons in the 100-m time-of-flight (TOF) tunnel at the Research Center for Nuclear Physics (RCNP) cyclotron facility. Neutron energy spe...
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2017-01-01
|
| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201715308019 |
| _version_ | 1818650088609677312 |
|---|---|
| author | Iwamoto Yosuke Sato Tatsuhiko Satoh Daiki Hagiwara Masayuki Yashima Hiroshi Masuda Akihiko Matsumoto Tetsuro Iwase Hiroshi Shima Tatsushi Nakamura Takashi |
| author_facet | Iwamoto Yosuke Sato Tatsuhiko Satoh Daiki Hagiwara Masayuki Yashima Hiroshi Masuda Akihiko Matsumoto Tetsuro Iwase Hiroshi Shima Tatsushi Nakamura Takashi |
| author_sort | Iwamoto Yosuke |
| collection | DOAJ |
| description | To develop the 100-400 MeV quasi-monoenergetic neutron field, we measured neutron and unexpected gamma-ray energy spectra of the 7Li(p,n) reaction with 80-389 MeV protons in the 100-m time-of-flight (TOF) tunnel at the Research Center for Nuclear Physics (RCNP) cyclotron facility. Neutron energy spectra with energies above 3 MeV were measured by the TOF method, which had been reported in our previous papers, and photon energy spectra with energies above 0.1 MeV were measured by the automatic unfolding function of the radiation dose monitor DARWIN. For neutron spectra, the contribution of peak intensity to the total intensity integrated with energies above 3 MeV varied between 0.38 and 0.48 in the proton energy range of 80–389 MeV. For gamma-ray spectra, highenergetic gamma-rays at around 70 MeV originated from the decay of π0 were observed with proton energies higher than 200 MeV. For the 246-MeV proton incident reaction, the contribution of gamma-ray dose to neutron dose is negligible because the ratio of gamma-ray dose to neutron dose is 0.014. |
| first_indexed | 2024-12-17T01:44:40Z |
| format | Article |
| id | doaj.art-eb85a29cda4b4503aa9b9488872f2ce5 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-17T01:44:40Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-eb85a29cda4b4503aa9b9488872f2ce52022-12-21T22:08:14ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011530801910.1051/epjconf/201715308019epjconf_icrs2017_08019Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka UniversityIwamoto Yosuke0Sato Tatsuhiko1Satoh Daiki2Hagiwara MasayukiYashima Hiroshi3Masuda Akihiko4Matsumoto Tetsuro5Iwase HiroshiShima Tatsushi6Nakamura TakashiJapan Atomic Energy Agency (JAEA)Japan Atomic Energy Agency (JAEA)Japan Atomic Energy Agency (JAEA)Research Reactor Institute, Kyoto UniversityNational Institute of Advanced Industrial Science and TechnologyNational Institute of Advanced Industrial Science and TechnologyResearch Center for Nuclear Physics (RCNP), Osaka UniversityTo develop the 100-400 MeV quasi-monoenergetic neutron field, we measured neutron and unexpected gamma-ray energy spectra of the 7Li(p,n) reaction with 80-389 MeV protons in the 100-m time-of-flight (TOF) tunnel at the Research Center for Nuclear Physics (RCNP) cyclotron facility. Neutron energy spectra with energies above 3 MeV were measured by the TOF method, which had been reported in our previous papers, and photon energy spectra with energies above 0.1 MeV were measured by the automatic unfolding function of the radiation dose monitor DARWIN. For neutron spectra, the contribution of peak intensity to the total intensity integrated with energies above 3 MeV varied between 0.38 and 0.48 in the proton energy range of 80–389 MeV. For gamma-ray spectra, highenergetic gamma-rays at around 70 MeV originated from the decay of π0 were observed with proton energies higher than 200 MeV. For the 246-MeV proton incident reaction, the contribution of gamma-ray dose to neutron dose is negligible because the ratio of gamma-ray dose to neutron dose is 0.014.https://doi.org/10.1051/epjconf/201715308019 |
| spellingShingle | Iwamoto Yosuke Sato Tatsuhiko Satoh Daiki Hagiwara Masayuki Yashima Hiroshi Masuda Akihiko Matsumoto Tetsuro Iwase Hiroshi Shima Tatsushi Nakamura Takashi Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University EPJ Web of Conferences |
| title | Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University |
| title_full | Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University |
| title_fullStr | Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University |
| title_full_unstemmed | Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University |
| title_short | Experimental analysis of neutron and background gamma-ray energy spectra of 80-400 MeV 7Li(p,n) reactions under the quasi-monoenergetic neutron field at RCNP, Osaka University |
| title_sort | experimental analysis of neutron and background gamma ray energy spectra of 80 400 mev 7li p n reactions under the quasi monoenergetic neutron field at rcnp osaka university |
| url | https://doi.org/10.1051/epjconf/201715308019 |
| work_keys_str_mv | AT iwamotoyosuke experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT satotatsuhiko experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT satohdaiki experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT hagiwaramasayuki experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT yashimahiroshi experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT masudaakihiko experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT matsumototetsuro experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT iwasehiroshi experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT shimatatsushi experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity AT nakamuratakashi experimentalanalysisofneutronandbackgroundgammarayenergyspectraof80400mev7lipnreactionsunderthequasimonoenergeticneutronfieldatrcnposakauniversity |