Sensitivity calibration of NaI(Tl) scintillator based on single photon counting

Xiaoan, 何小安 He; Chaoguang, 李朝光 Li; Rongqing, 易荣清 Yi; Ming, 苏明 Su; Qiwei, 张奇玮 Zhang; Xichao, 阮锡超 Ruan

doi:10.3788/hplpb20152703.32022

Cited by 2 publications

(2 citation statements)

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“…Four groups of full aperture backscatter stations (FABS) and near-backscatter imagers (NBI) are used to collect the light from simulated Brillouin scattering (SBS) and simulated Raman scattering (SRS) in a solid angle of 28 • , providing the energy fractions of the scattering lights with an uncertainty of 30% [30]. A fluorescence filter (FF) spectrometer is used to measure the hard x-ray spectrum and the energy fraction of hot electrons [31,32].…”

Section: Methodsmentioning

confidence: 99%

Experimental and simulation studies on gold bubble movement in gas-filled hohlraums

Guo¹,

Li²,

Xie³

et al. 2018

Nucl. Fusion

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A recent experiment on the Shenguang III laser facility has applied open-end gold hohlraums with two gas pressures to study the movement of a plasma bubble. Under a laser intensity and width close to those of an ignition main pulse, the bubbles possess radial scales from several hundred to one thousand micrometers. An x-ray framing camera is used to measure the N-band x-ray images generated from the gold bubble plasma at different moments, from which the edge positions of the expanding bubbles are accurately acquired. The experimental results are simulated by an optimized two-dimensional radiation hydrodynamic code. Based on the classical average atom (AA) model, two phenomenological coefficients Cer and Cop are introduced into the code to correct the bubble evolution. Cer artificially redistributes the energies between radiation and matter, and Cop correlatively adjusts the plasma opacity. The bubble movement simulated by the novel phenomenological model agrees better with the measured result than that by the AA model. This work plays a critical role in our code improvements and advances the reliability of the hohlraum design.

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Section: Methodsmentioning

confidence: 99%

Experimental and simulation studies on gold bubble movement in gas-filled hohlraums

Guo¹,

Li²,

Xie³

et al. 2018

Nucl. Fusion

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“…The uncertainty of scattered energy is ∼30% due to calibration process. A five-channel fluorescence filter (FF) spectrometer covering photon energy from 47 keV to 81 keV is applied for hot electron energy and spectrum measurement via bremsstrahlung emission [30]. The uncertainties of hot electron temperature and energy are 20% from system calibration and multichannel fitting process.…”

mentioning

confidence: 99%

Investigation of preheat induced degradation on material compression for double shock drive under different picket power

Zhang¹,

Yang²,

Duan³

et al. 2020

Plasma Phys. Control. Fusion

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Material compressibility and entropy is of great significance for inertial confinement fusion research. Preheat induced degradation on material compression under double shock compression is studied on ShenGuang series laser facility. The deviations on rear surface expansion and multiple shock timing are contrasted under different picket power. The measured preheat besides shocks could provide more physical boundaries and benchmarks from experiment. 1% silicon dopants is mandatory to keep ablator/fuel interface stable with P picket = 9.60 TW and T r = 146 eV in a double-shock compression. While pure GDP ablator is applicable to P picket = 3.36 TW. This study demonstrates a new testbed to provide in-situ preheat evaluation for implosion experiment. It aims to validate the preheat level and effects on material compression for a double shock, low convergence ratio design. It could also provide valuable information for target dopant design and upcoming shock tuning process.

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Sensitivity calibration of NaI(Tl) scintillator based on single photon counting

Cited by 2 publications

References 0 publications

Experimental and simulation studies on gold bubble movement in gas-filled hohlraums

Experimental and simulation studies on gold bubble movement in gas-filled hohlraums

Investigation of preheat induced degradation on material compression for double shock drive under different picket power

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