Study of a new boron loaded plastic scintillator (revised)

Normand, S.; Mouanda, B.; Haan, S.; Louvel, M.

doi:10.1109/tns.2002.805282

Cited by 23 publications

(12 citation statements)

References 10 publications

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“…Based on the electronic thresholds and prelaunch calibration measurements, we estimate that the BP reset was triggered for a scintillator energy deposition of 2.5 MeV electron‐energy equivalent. When this energy is converted to a proton‐energy equivalent based on the difference of light output for electrons and protons in the borated plastic scintillator [ Normand et al ., ], we estimate that the proton‐energy threshold for BP reset counts is ~25 MeV.…”

Section: The Messenger Ns and Measurements Of Charged Particlesmentioning

confidence: 99%

Galactic cosmic ray variations in the inner heliosphere from solar distances less than 0.5 AU: Measurements from the MESSENGER Neutron Spectrometer

et al. 2016

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The Neutron Spectrometer (NS) on board NASA's MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft is sensitive to galactic cosmic ray (GCR) protons greater than 125 MeV. During the MESSENGER orbital mission of Mercury, which lasted from March 2011 to April 2015, the NS made continual measurements of GCR variations, which represent the first long‐term GCR measurements for solar distances less than 0.5 AU. These relative GCR variations are compared to GCR variations measured by the Cosmic Ray Telescope for Environmental Radiation (CRaTER) on the Lunar Reconnaissance Orbiter. The two data sets are highly correlated, with correlation coefficients ranging from 0.91 to 0.98 for time integrations ranging from 1 to 25 days. The MESSENGER NS and CRaTER measurements of GCR variations are used to investigate the GCR radial gradient within the inner solar system. We find that the GCR radial gradient is less than 10% per AU, which is consistent with GCR radial gradients measured for solar distances greater than 1 AU.

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Section: The Messenger Ns and Measurements Of Charged Particlesmentioning

confidence: 99%

Galactic cosmic ray variations in the inner heliosphere from solar distances less than 0.5 AU: Measurements from the MESSENGER Neutron Spectrometer

et al. 2016

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“…Many studies of organic (solid or liquid) scintillators, such as PVT, reported to date involve the use of MCNP calculations for the response of these materials to neutrons. Normand et al [11] used MCNP in combination with two other codes to calculate the spectrum from a boron-loaded plastic scintillator. Other articles on the response of scintillator materials to neutrons and gamma rays have been published, including Refs.…”

Section: Introductionmentioning

confidence: 99%

Energy calibration of gamma spectra in plastic scintillators using Compton kinematics

Siciliano

Ely

Kouzes

et al. 2008

Nuclear Instruments and Methods in Physics Research Section A:

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“…Recoil carbon nuclei are also produced. Considering that a 12 C nucleus has 6 times more charge than a proton, its quenching effect will be more serious [13], and hence the equivalent energy deposition will be quite small. If we further notice that the mass of a 12 C nucleus is 12 times heavier than the mass of a proton, the average recoil energy of a 12 C nucleus is about 0.284 (48/169) times than that of a proton's, so the effect of recoil 12 C nuclei is omitted in this discussion.…”

Section: B the Detection Of Neutronsmentioning

confidence: 99%

A capture-gated fast neutron detection method

Liu¹,

Yang²,

Ma³

et al. 2016

Chinese Phys. C

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Abstract-To address the problem of the shortage of neutron detectors used in radiation portal monitors (RPMs), caused by the 3 He supply crisis, research on a cadmium-based capture-gated fast neutron detector is presented in this paper. The detector is composed of many 1 cm × 1 cm × 20 cm plastic scintillator cuboids covered by 0.1 mm thick film of cadmium. The detector uses cadmium to absorb thermal neutrons and produce capture gamma-rays to indicate the detection of neutrons, and uses plastic scintillator to moderate neutrons and register gamma-rays. This design removes the volume competing relationship in traditional 3 He counter-based fast neutron detectors, which hinders enhancement of the neutron detection efficiency. Detection efficiency of The detection efficiency, ε n , of fast neutrons is roughly determined by the product of two probabilities, P m and P a , with P m the probability of decelerating fast neutrons to slow neutrons and P a the probability of absorbing the decelerated neutrons by 3 He nuclei.It is clear that P m or P a will be augmented with increased moderator volume or 3 He volume. The maximum detection efficiency of the " 3 He counter + moderator" detector is limited by the compromise between P m and P a . Fig. 1 gives the simulation results of the detection efficiency curves for 252 Cf neutrons when the volume partition between polyethylene moderator and 3 He counter is varied. It can be seen that the maximum detection efficiency with a detector size of 9000 cm 3 is only 11%, even if the 3 He pressure is 8 atm.

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Study of a new boron loaded plastic scintillator (revised)

Cited by 23 publications

References 10 publications

Galactic cosmic ray variations in the inner heliosphere from solar distances less than 0.5 AU: Measurements from the MESSENGER Neutron Spectrometer

Galactic cosmic ray variations in the inner heliosphere from solar distances less than 0.5 AU: Measurements from the MESSENGER Neutron Spectrometer

Energy calibration of gamma spectra in plastic scintillators using Compton kinematics

A capture-gated fast neutron detection method

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