Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

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Gamma-Ray Spectrometry in the Energy Range 0.5–5 MeV

Symposium - International Astronomical Union ◽

10.1017/s0074180900103316 ◽

1971 ◽

Vol 41 ◽

pp. 58-62 ◽

Cited By ~ 2

Author(s):

F. Albernhe ◽

C. Doulade ◽

I. M. Martin ◽

R. Talon ◽

G. Vedrenne

Keyword(s):

Gamma Rays ◽

Pulse Shape ◽

Gamma Ray ◽

Plastic Scintillator ◽

Pulse Shape Discrimination ◽

Field Of View ◽

Gamma Ray Spectrometry ◽

Shape Discrimination ◽

Equatorial Latitude ◽

Compton Electron

A stilbene scintillator detector allowing gamma-ray spectrometry in the range 0.5–5 MeV is presented. A complete elimination of charged particles is obtained by a plastic scintillator anticoïncidence jacket. Separation of gamma rays from neutrons is made by pulse shape discrimination technique with over 99% efficiency. This detector which has a 4 π field of view has been made as light as possible to avoid perturbation due to secondary production in the apparatus. The correction of the edge effects and the method of conversion from experimental Compton electron spectrum to gamma-ray spectrum are explained.Results from balloon launchings at three latitudes (Kourou Guyana: 10 N, Aire sur l'Adour: 46°N and Oboziersky U.S.S.R.: 62 °N) are briefly presented. The detection possibility with balloons of galactic gamma rays at equatorial latitude is shown. The atmospheric part of the flux at the equator is deduced from the measurements at higher latitudes, (46 °N and 62 °N) where the galactic component is of negligible importance. Assuming a power law spectrum and after correction of the atmospheric absorption we obtain for the galactic spectrum the expression dN/dE = 1.1 × 10−5E−1, 2 photons/cm2 s sr keV. This spectrum agrees with the results of ERS 18 satellite given by Vette et al. showing an excess of flux for energies higher than 1 MeV.

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Investigation of the neutron-gamma ray discrimination performance at low neutron energy of a solution-grown stilbene scintillator

EPJ Web of Conferences ◽

10.1051/epjconf/202022504013 ◽

2020 ◽

Vol 225 ◽

pp. 04013

Author(s):

Augusto Di Chicco ◽

Michael Petit ◽

Robert Jacqmin ◽

Vincent Gressier ◽

Brian Stout

Keyword(s):

Energy Range ◽

Neutron Energy ◽

Pulse Shape ◽

Gamma Ray ◽

Discrimination Performance ◽

Comparison Method ◽

Pulse Shape Discrimination ◽

Shape Discrimination ◽

Post Processing ◽

Energetic Neutron

The results of experiments performed with a Ø25 x 25 mm solution-grown stilbene crystal in mono-energetic neutron fields in the 80-to-230 keV energy range are presented. The goal of the measurements, performed at the AMANDE facility, was to explore the capabilities of this organic scintillator to measure neutrons at the lowest possible energy with good pulse shape discrimination (PSD). The time of flight (TOF) technique was used in order to help with the neutron-gamma discrimination. The data are collected via a programmable digital acquisition (DAQ) system CAEN DT7530 using the software CoMPASS with the charge comparison method (CCM). The data are analysed using post-processing codes developed in the ROOT environment. The results show that the stilbene detector has discrimination capabilities for energies as low as 80 keV.

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A new compact neutron/gamma ray scintillation detector

International Journal of Modern Physics Conference Series ◽

10.1142/s2010194516602283 ◽

2016 ◽

Vol 44 ◽

pp. 1660228 ◽

Cited By ~ 3

Author(s):

A. Buffler ◽

A. C. Comrie ◽

F. D. Smit ◽

H. J. Wörtche

Keyword(s):

Gamma Rays ◽

Pulse Shape ◽

Gamma Ray ◽

Plastic Scintillator ◽

Pulse Shape Discrimination ◽

Shape Discrimination ◽

Neutron Energy Range ◽

Neutron Spectrometer ◽

Silicon Photomultipliers ◽

Digital Implementation

Progress towards the realization of a new compact neutron spectrometer is described. The detector is based on EJ299-33 plastic scintillator coupled to silicon photomultipliers, and a digital implementation of pulse shape discrimination is used to separate events associated with neutrons from those associated with gamma rays. The spectrometer will be suitable over the neutron energy range 1–100 MeV, illustrated in this work with measurements made using an AmBe radioisotopic source and quasi-monoenergetic neutron beams produced using a cyclotron.

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