OperaV1, Main, Exploration, bibRecord, 000657

Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique

Identifieur interne : 000657 ( Main/Exploration ); précédent : 000656; suivant : 000658

Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique

Auteurs : K. Ishihara [Japon] ; K. Takagi [Japon] ; H. Minato [Japon] ; J. Kawarabayashi [Japon] ; H. Tomita [Japon] ; S. Maeda [Japon] ; T. Naka [Japon] ; K. Morishima [Japon] ; T. Nakano [Japon] ; M. Nakamura [Japon] ; T. Iguchi [Japon]

Source :

Radiation measurements [ 1350-4487 ] ; 2013.

RBID : Pascal:13-0295839

Descripteurs français

Pascal (Inist)
- Neutron, Détection, Rayonnement gamma, Energie, Dimension grain, Densité, Irradiation, Electron, Efficacité, Emulsion nucléaire, Neutron rapide.
Wicri :
- topic : Irradiation.

English descriptors

KwdEn :
- density, detection, efficiency, electrons, energy, gamma rays, grain size, irradiation, neutrons.

Abstract

In order to measure neutron flux and energy in the presence of high-intensity background gamma rays, a new nuclear emulsion based on a non-sensitized OPERA film was synthesized, which had small AgBr grain sizes of 60, 90 and 160 nm. The sensitivity of this new emulsion, which is described in terms of the stopping power and grain density, was estimated experimentally by neutron irradiation at several energies. The response of the emulsion to gamma-ray-induced electrons was also simulated and the results were compared with experimental data obtained using a ⁶⁰Co gamma source. The results indicated that each AgBr grain has a threshold energy that must be deposited before the AgBr can develop into metallic Ag. Based on these results, the efficiency of the new emulsion in detecting gamma rays and neutrons was evaluated.

Affiliations:

Japon

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Le document en format XML

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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique</title>
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<author><name sortKey="Tomita, H" sort="Tomita, H" uniqKey="Tomita H" first="H." last="Tomita">H. Tomita</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Graduate School of Engineering, Nagoya University, Furo-cho</s1>
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<author><name sortKey="Maeda, S" sort="Maeda, S" uniqKey="Maeda S" first="S." last="Maeda">S. Maeda</name>
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<author><name sortKey="Naka, T" sort="Naka, T" uniqKey="Naka T" first="T." last="Naka">T. Naka</name>
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<author><name sortKey="Morishima, K" sort="Morishima, K" uniqKey="Morishima K" first="K." last="Morishima">K. Morishima</name>
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</affiliation>
</author>
<author><name sortKey="Nakano, T" sort="Nakano, T" uniqKey="Nakano T" first="T." last="Nakano">T. Nakano</name>
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<author><name sortKey="Nakamura, M" sort="Nakamura, M" uniqKey="Nakamura M" first="M." last="Nakamura">M. Nakamura</name>
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<sZ>7 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
<sZ>10 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<wicri:noRegion>Graduate School of Science, Nagoya University</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Iguchi, T" sort="Iguchi, T" uniqKey="Iguchi T" first="T." last="Iguchi">T. Iguchi</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Graduate School of Engineering, Nagoya University, Furo-cho</s1>
<s2>Chikusa-ku, Nagoya</s2>
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<country>Japon</country>
<wicri:noRegion>Chikusa-ku, Nagoya</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Radiation measurements</title>
<title level="j" type="abbreviated">Radiat. meas.</title>
<idno type="ISSN">1350-4487</idno>
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<seriesStmt><title level="j" type="main">Radiation measurements</title>
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<idno type="ISSN">1350-4487</idno>
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</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>density</term>
<term>detection</term>
<term>efficiency</term>
<term>electrons</term>
<term>energy</term>
<term>gamma rays</term>
<term>grain size</term>
<term>irradiation</term>
<term>neutrons</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Neutron</term>
<term>Détection</term>
<term>Rayonnement gamma</term>
<term>Energie</term>
<term>Dimension grain</term>
<term>Densité</term>
<term>Irradiation</term>
<term>Electron</term>
<term>Efficacité</term>
<term>Emulsion nucléaire</term>
<term>Neutron rapide</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Irradiation</term>
</keywords>
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</teiHeader>
<front><div type="abstract" xml:lang="en">In order to measure neutron flux and energy in the presence of high-intensity background gamma rays, a new nuclear emulsion based on a non-sensitized OPERA film was synthesized, which had small AgBr grain sizes of 60, 90 and 160 nm. The sensitivity of this new emulsion, which is described in terms of the stopping power and grain density, was estimated experimentally by neutron irradiation at several energies. The response of the emulsion to gamma-ray-induced electrons was also simulated and the results were compared with experimental data obtained using a <sup>60</sup>
Co gamma source. The results indicated that each AgBr grain has a threshold energy that must be deposited before the AgBr can develop into metallic Ag. Based on these results, the efficiency of the new emulsion in detecting gamma rays and neutrons was evaluated.</div>
</front>
</TEI>
<affiliations><list><country><li>Japon</li>
</country>
</list>
<tree><country name="Japon"><noRegion><name sortKey="Ishihara, K" sort="Ishihara, K" uniqKey="Ishihara K" first="K." last="Ishihara">K. Ishihara</name>
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<name sortKey="Iguchi, T" sort="Iguchi, T" uniqKey="Iguchi T" first="T." last="Iguchi">T. Iguchi</name>
<name sortKey="Kawarabayashi, J" sort="Kawarabayashi, J" uniqKey="Kawarabayashi J" first="J." last="Kawarabayashi">J. Kawarabayashi</name>
<name sortKey="Maeda, S" sort="Maeda, S" uniqKey="Maeda S" first="S." last="Maeda">S. Maeda</name>
<name sortKey="Minato, H" sort="Minato, H" uniqKey="Minato H" first="H." last="Minato">H. Minato</name>
<name sortKey="Morishima, K" sort="Morishima, K" uniqKey="Morishima K" first="K." last="Morishima">K. Morishima</name>
<name sortKey="Naka, T" sort="Naka, T" uniqKey="Naka T" first="T." last="Naka">T. Naka</name>
<name sortKey="Nakamura, M" sort="Nakamura, M" uniqKey="Nakamura M" first="M." last="Nakamura">M. Nakamura</name>
<name sortKey="Nakano, T" sort="Nakano, T" uniqKey="Nakano T" first="T." last="Nakano">T. Nakano</name>
<name sortKey="Takagi, K" sort="Takagi, K" uniqKey="Takagi K" first="K." last="Takagi">K. Takagi</name>
<name sortKey="Tomita, H" sort="Tomita, H" uniqKey="Tomita H" first="H." last="Tomita">H. Tomita</name>
</country>
</tree>
</affiliations>
</record>

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Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique

Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique

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