Refine your search:     
Report No.
 - 
Search Results: Records 1-14 displayed on this page of 14
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Demonstration of a neutron resonance transmission analysis system using a laser-driven neutron source

Hironaka, Kota; Ito, Fumiaki*; Lee, J.; Koizumi, Mitsuo; Takahashi, Tone; Suzuki, Satoshi*; Yogo, Akifumi*; Arikawa, Yasunobu*; Abe, Yuki*

Dai-42-Kai Nihon Kaku Busshitsu Kanri Gakkai Nenji Taikai Kaigi Rombunshu (Internet), 4 Pages, 2021/11

Neutron resonance transmission analysis (NRTA) is a method for non-destructive measurement of nuclear material by using a time-of-flight (TOF) technique with a pulsed neutron source. For NRTA system to carry out the short-distance TOF measurements with high resolutions, a short-pulsed neutron source is required. Laser-driven neutron sources (LDNSs) is very suitable as such a neutron source because of its short pulse width. Moreover, the compactness of the laser system is also expected due to the remarkable development of laser technology in recent years. In the present study, we have developed a technology for applying LDNS to the NRTA system and conducted the demonstration experiment using the LFEX laser at Osaka University to investigate the feasibility of the system. In this experiment, we successfully observed the neutron resonance peaks of indium and silver samples.

Journal Articles

Development of a neutron sintillator for a compact NRTA system

Ito, Fumiaki*; Lee, J.; Hironaka, Kota; Takahashi, Tone; Suzuki, Satoshi*; Hori, Junichi*; Terada, Kazushi*; Koizumi, Mitsuo

KURNS Progress Report 2020, P. 98, 2021/08

A compact Nuclear Resonance Transmission Analysis (NRTA) system using a Laser Driven Neutron Source (LDNS) has been developed as a part of the development of nuclear non-proliferation technology supported by the MEXT. In NRTA, the neutron energy emitted from a pulsed neutron source is measured using the time-of-flight (TOF) method. LDNS is of interest because of its short pulse width, which is necessary for accurate TOF measurements over short flight distances. In the short-distance TOF measurement, there will be a large gamma-ray background event due to the coincidence of the timing of the arrival of 2.2 MeV gamma-rays due to neutron capture on hydrogen in the moderator and the timing of the arrival of neutrons around the resonance energy. Since the LDNS is still under development, the neutron flux is not sufficient and it is desirable to use a detector with high detection efficiency. For these reasons, we have developed a detector with low efficiency to gamma-rays and high efficiency to neutrons (multilayer neutron detector). As one of the results of this year's experiments, we confirmed that the multilayer neutron detector have low sensitivity to gamma-rays.

Oral presentation

Developments of neutron resonance transmission analysis using a laser driven neutron source, 3; Transmission measurements of In and Ag by a Time-of-Flight method using the LFEX laser

Ito, Fumiaki*; Lee, J.; Takahashi, Tone; Koizumi, Mitsuo; Suzuki, Satoshi*; Hironaka, Kota; Yogo, Akifumi*; Arikawa, Yasunobu*; Abe, Yuki*

no journal, , 

We have been developing Nuclear Resonance Transmission Analysis (NRTA) using Laser Driven Neutron Source (LDNS) as a part of nuclear non-proliferation technology development supported by the MEXT (Ministry of Education, Culture, Sports, Science and Technology) subsidy program "promotion of strengthening nuclear security and the like". An LDNS, which can generate short pulsed neutrons from a small volume, is considered to potentially have large benefits for the NRTA. In order to demonstrate the NRTA using the LDNS, the transmission measurements have been carried out by the TOF method using the LFEX laser at Osaka University. The results are reported here.

Oral presentation

Developments of neutron resonance transmission analysis using a laser driven neutron source, 2; Simulation study of moderator for the LFEX laser experiments

Lee, J.; Ito, Fumiaki*; Takahashi, Tone; Suzuki, Satoshi*; Hironaka, Kota; Yogo, Akifumi*; Arikawa, Yasunobu*; Abe, Yuki*

no journal, , 

no abstracts in English

Oral presentation

Developments of neutron resonance transmission analysis using a laser driven neutron source, 1; Applicability of laser driven neutron source for neutron resonance transmission analysis

Takahashi, Tone; Koizumi, Mitsuo; Ito, Fumiaki*; Lee, J.; Suzuki, Satoshi*; Hironaka, Kota; Yogo, Akifumi*; Arikawa, Yasunobu*; Abe, Yuki*; Nishimura, Hiroaki*; et al.

no journal, , 

Oral presentation

Development of a measurement system applicable to the technique of neutron resonance transmission analysis using a laser-driven neutron source

Koizumi, Mitsuo; Ito, Fumiaki*; Lee, J.; Takahashi, Tone; Suzuki, Satoshi*; Hironaka, Kota; Yogo, Akifumi*; Arikawa, Yasunobu*; Abe, Yuki*

no journal, , 

no abstracts in English

Oral presentation

Development of a neutron resonance transmission analysis system using a laser driven neutron source

Ito, Fumiaki*; Lee, J.; Hironaka, Kota; Koizumi, Mitsuo; Takahashi, Tone; Suzuki, Satoshi*; Hori, Junichi*; Terada, Kazushi*; Yogo, Akifumi*

no journal, , 

no abstracts in English

Oral presentation

Development of neutron detector for detection of nuclear/radioactive material

Takahashi, Tone; Koizumi, Mitsuo; Hironaka, Kota; Kimura, Yoshiki; Mochimaru, Takanori*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*

no journal, , 

no abstracts in English

Oral presentation

Technology development of a neutron resonance transmission analysis using a laser driven neutron source

Lee, J.; Ito, Fumiaki*; Hironaka, Kota; Koizumi, Mitsuo; Takahashi, Tone; Suzuki, Satoshi*; Yogo, Akifumi*; Arikawa, Yasunobu*; Abe, Yuki*; Hori, Junichi*

no journal, , 

no abstracts in English

Oral presentation

Development of detection techniques of nuclear and radioactive materials for major public events

Takahashi, Tone; Koizumi, Mitsuo; Hironaka, Kota; Mochimaru, Takanori*; Sato, Yuki; Terasaka, Yuta; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*

no journal, , 

Oral presentation

Development of radiation dose mapping technology for nuclear security

Takahashi, Tone; Mochimaru, Takanori*; Koizumi, Mitsuo; Hironaka, Kota; kato, keigo*

no journal, , 

no abstracts in English

Oral presentation

Response characteristics of a $$^{6}$$Li-glass scintillator for high energy gamma-rays

Lee, J.; Ito, Fumiaki*; Hironaka, Kota; Hori, Junichi*; Terada, Kazushi*; Koizumi, Mitsuo

no journal, , 

no abstracts in English

Oral presentation

Development of neutron detector using plastic scintillator for detection of nuclear/radioactive material

Mochimaru, Takanori*; Takahashi, Tone; Koizumi, Mitsuo; Hironaka, Kota; kato, keigo*; Yamanishi, Hirokuni*; Wakabayashi, Genichiro*

no journal, , 

no abstracts in English

Oral presentation

Detection techniques of nuclear and radioactive materials in wide area

Takahashi, Tone; Koizumi, Mitsuo; Hironaka, Kota; Mochimaru, Takanori*; kato, keigo*

no journal, , 

no abstracts in English

14 (Records 1-14 displayed on this page)
  • 1