The characteristics of the prompt gamma-ray analyzing system at the neutron beam guides of JRR-3M

ABSTRACTA combination of cold neutron prompt gamma-ray activation analysis (PGAA) and neutron incoherent scattering (NIS) has been used for nondestructive characterization of hydrogen as a function of position in slabs of wet concrete of different compositions. Hydrogen was determined by PGAA by scanning each sample across a 5 mm diameter neutron beam in 10 mm increments, and measuring the 2223 keV prompt gamma ray. NIS measurements were performed by scanning the sample across a 5 mm diameter neutron beam at 5 mm increments and detecting scattered neutrons. The measurements demonstrate the feasibility of the techniques for 2D compositional mapping of hydrogen and other elements in materials, and indicate the potential of these methods for monitoring the uniformity of drying concrete.

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Prompt Gamma-ray Analysis with Cold Neutron Beam.

RADIOISOTOPES ◽

10.3769/radioisotopes.43.11_727 ◽

1994 ◽

Vol 43 (11) ◽

pp. 727-728 ◽

Cited By ~ 1

Author(s):

CHUSHIRO YONEZAWA

Keyword(s):

Neutron Beam ◽

Gamma Ray ◽

Cold Neutron ◽

Prompt Gamma ◽

Cold Neutron Beam

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Development of a neutron beam line and detector system for multiple prompt gamma-ray analysis

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/s10967-008-1508-7 ◽

2008 ◽

Vol 278 (3) ◽

pp. 703-706 ◽

Cited By ~ 11

Author(s):

Y. Toh ◽

M. Oshima ◽

K. Furutaka ◽

A. Kimura ◽

M. Koizumi ◽

...

Keyword(s):

Neutron Beam ◽

Gamma Ray ◽

Beam Line ◽

Detector System ◽

Prompt Gamma

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Localization of inclusions in multiple prompt gamma ray analysis: a feasibility study

Journal of Physics Conference Series ◽

10.1088/1742-6596/470/1/012001 ◽

2013 ◽

Vol 470 ◽

pp. 012001 ◽

Cited By ~ 2

Author(s):

A Miceli ◽

G Festa ◽

R Senesi ◽

G Gorini ◽

C Andreani

Keyword(s):

Feasibility Study ◽

Gamma Ray ◽

Prompt Gamma

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PO-1728: Development of a new prompt gamma ray detection system for full 3D proton range verification

Radiotherapy and Oncology ◽

10.1016/s0167-8140(21)01746-1 ◽

2020 ◽

Vol 152 ◽

pp. S957-S958

Author(s):

P. Costanza ◽

R.I. Mackay ◽

K.J. Kirkby ◽

M.J. Taylor

Keyword(s):

Gamma Ray ◽

Detection System ◽

Prompt Gamma ◽

Range Verification

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Measurement of low elemental concentrations in geological materials by prompt gamma-ray spectroscopy

Chemical Geology ◽

10.1016/0009-2541(88)90719-x ◽

1988 ◽

Vol 70 (1-2) ◽

pp. 177

Author(s):

R.A. Oliver ◽

G. Vivier ◽

P. Vittoz ◽

S. Robinson

Keyword(s):

Gamma Ray ◽

Prompt Gamma ◽

Geological Materials ◽

Elemental Concentrations ◽

Gamma Ray Spectroscopy

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Optical Afterglows as Probes for the Central Engine and Fireball of Gamma-Ray Bursts

Proceedings of the International Astronomical Union ◽

10.1017/s1743921312019928 ◽

2012 ◽

Vol 8 (S290) ◽

pp. 263-264

Author(s):

Liang Li ◽

En-Wei Liang ◽

He Gao ◽

Bing Zhang

Keyword(s):

Statistical Analysis ◽

Gamma Rays ◽

Density Profile ◽

Gamma Ray ◽

Ambient Medium ◽

Gamma Ray Bursts ◽

Prompt Gamma ◽

Medium Density ◽

Central Engine ◽

Prompt Emission

AbstractWell-sampled optical lightcurves of 146 gamma-ray bursts (GRBs) are compiled from literature. We identify possible emission components based on our empirical fits and present statistical analysis for these components. We find that the flares are related to prompt emission, suggesting that they could have the same origin in different episodes. The shallow decay segment is not correlated with prompt gamma-rays. It likely signals a long-lasting injected wind from GRB central engines. Early after onset peak is closely related with prompt emission. The ambient medium density profile is likely n ∝ r−1. No correlation between the late re-brightening bump and prompt gamma-rays or the onset bump is found. They may be from another jet component.

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