Fissile mass estimation using β-delayed γ-rays and neutrons from fast and epithermal induced fissions

A. Ocherashvili; A. Beck; T. Bogucarska; J. M. Crochemore; G. Heger; D. Michaeli; I. Israelashvili; E. Roesgen; G. Varasano; B. Pedersen

doi:10.1088/1748-0221/17/11/T11012

Fissile mass estimation using β-delayed γ-rays and neutrons from fast and epithermal induced fissions

A. Ocherashvili, A. Beck, T. Bogucarska, J. M. Crochemore, G. Heger, D. Michaeli, I. Israelashvili, E. Roesgen, G. Varasano, B. Pedersen

Research output: Contribution to journal › Article › peer-review

Abstract

A potential method for mass estimation of shielded special nuclear materials (SNM) is proposed. The method uses fast and epithermal neutrons, generated by an external pulsed neutron source, to induce fission in SNM. The subsequent β-delayed γ-rays and neutrons, emitted by the fission products, are measured simultaneously by two ³He slab detectors and a coaxial high purity germanium (HPGe) detector, located around the tested material. Measuring simultaneously both, β-delayed γ-rays and neutrons measurement, offers improved sensitivity for fissile materials detecting. Laboratory examination of the method was performed in the Pulsed Neutron Interrogation Test Assembly (PUNITA), using CBNM (Central Bureau for Nuclear Measurements) samples of Uranium.

Original language	English
Article number	T11012
Journal	Journal of Instrumentation
Volume	17
Issue number	11
DOIs	https://doi.org/10.1088/1748-0221/17/11/T11012
State	Published - 1 Nov 2022
Externally published	Yes

Keywords

Gamma detectors (scintillators, CZT, HPGe, HgI etc)
Neutron detectors (cold, thermal, fast neutrons)

ASJC Scopus subject areas

Instrumentation
Mathematical Physics

Access to Document

10.1088/1748-0221/17/11/T11012

Cite this

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title = "Fissile mass estimation using β-delayed γ-rays and neutrons from fast and epithermal induced fissions",

abstract = "A potential method for mass estimation of shielded special nuclear materials (SNM) is proposed. The method uses fast and epithermal neutrons, generated by an external pulsed neutron source, to induce fission in SNM. The subsequent β-delayed γ-rays and neutrons, emitted by the fission products, are measured simultaneously by two 3He slab detectors and a coaxial high purity germanium (HPGe) detector, located around the tested material. Measuring simultaneously both, β-delayed γ-rays and neutrons measurement, offers improved sensitivity for fissile materials detecting. Laboratory examination of the method was performed in the Pulsed Neutron Interrogation Test Assembly (PUNITA), using CBNM (Central Bureau for Nuclear Measurements) samples of Uranium.",

keywords = "Gamma detectors (scintillators, CZT, HPGe, HgI etc), Neutron detectors (cold, thermal, fast neutrons)",

author = "A. Ocherashvili and A. Beck and T. Bogucarska and Crochemore, \{J. M.\} and G. Heger and D. Michaeli and I. Israelashvili and E. Roesgen and G. Varasano and B. Pedersen",

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year = "2022",

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doi = "10.1088/1748-0221/17/11/T11012",

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TY - JOUR

T1 - Fissile mass estimation using β-delayed γ-rays and neutrons from fast and epithermal induced fissions

AU - Ocherashvili, A.

AU - Beck, A.

AU - Bogucarska, T.

AU - Crochemore, J. M.

AU - Heger, G.

AU - Michaeli, D.

AU - Israelashvili, I.

AU - Roesgen, E.

AU - Varasano, G.

AU - Pedersen, B.

PY - 2022/11/1

Y1 - 2022/11/1

N2 - A potential method for mass estimation of shielded special nuclear materials (SNM) is proposed. The method uses fast and epithermal neutrons, generated by an external pulsed neutron source, to induce fission in SNM. The subsequent β-delayed γ-rays and neutrons, emitted by the fission products, are measured simultaneously by two 3He slab detectors and a coaxial high purity germanium (HPGe) detector, located around the tested material. Measuring simultaneously both, β-delayed γ-rays and neutrons measurement, offers improved sensitivity for fissile materials detecting. Laboratory examination of the method was performed in the Pulsed Neutron Interrogation Test Assembly (PUNITA), using CBNM (Central Bureau for Nuclear Measurements) samples of Uranium.

AB - A potential method for mass estimation of shielded special nuclear materials (SNM) is proposed. The method uses fast and epithermal neutrons, generated by an external pulsed neutron source, to induce fission in SNM. The subsequent β-delayed γ-rays and neutrons, emitted by the fission products, are measured simultaneously by two 3He slab detectors and a coaxial high purity germanium (HPGe) detector, located around the tested material. Measuring simultaneously both, β-delayed γ-rays and neutrons measurement, offers improved sensitivity for fissile materials detecting. Laboratory examination of the method was performed in the Pulsed Neutron Interrogation Test Assembly (PUNITA), using CBNM (Central Bureau for Nuclear Measurements) samples of Uranium.

KW - Gamma detectors (scintillators, CZT, HPGe, HgI etc)

KW - Neutron detectors (cold, thermal, fast neutrons)

UR - https://www.scopus.com/pages/publications/85143738853

U2 - 10.1088/1748-0221/17/11/T11012

DO - 10.1088/1748-0221/17/11/T11012

M3 - Article

AN - SCOPUS:85143738853

SN - 1748-0221

VL - 17

JO - Journal of Instrumentation

JF - Journal of Instrumentation

IS - 11

M1 - T11012

ER -

Fissile mass estimation using β-delayed γ-rays and neutrons from fast and epithermal induced fissions

Abstract

Keywords

ASJC Scopus subject areas

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