scholarly journals Demonstration of Energy-Resolved γ-Ray Detection at Room Temperature by the CsPbCl3 Perovskite Semiconductor

2021 ◽  
Vol 143 (4) ◽  
pp. 2068-2077
Author(s):  
Yihui He ◽  
Constantinos C. Stoumpos ◽  
Ido Hadar ◽  
Zhongzhen Luo ◽  
Kyle M. McCall ◽  
...  
Keyword(s):  
Room Temperature ◽  
Γ Ray

scholarly journals Gamma-Ray Spectral Unfolding of CdZnTe-Based Detectors Using a Genetic Algorithm

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7316
Author(s):  
Nicola Sarzi Amadè ◽  
Manuele Bettelli ◽  
Nicola Zambelli ◽  
Silvia Zanettini ◽  
Giacomo Benassi ◽  
...  
Keyword(s):  
Genetic Algorithm ◽  
Room Temperature ◽  
Gamma Ray ◽  
Spectral Shape ◽  
Semiconductor Detectors ◽  
Arduous Task ◽  
Γ Ray ◽  
Spectral Unfolding ◽  
Single Pixel ◽  
True Energy

The analysis of γ-ray spectra can be an arduous task, especially in the case of room temperature semiconductor detectors, where several distortions and instrumental artifacts conceal the true spectral shape. We developed a genetic algorithm to perform the unfolding of γ-spectra in order to restore the true energy distribution of the incoming radiation. We successfully validated our approach on experimental spectra of four radionuclides (241Am, 57Co, 137Cs and 133Ba) acquired with two CdZnTe-based detectors with different contact geometries (single pixel and drift strip). The unfolded spectra consist of δ-like peaks in correspondence with the radiation emissions of each radioisotope.

Study on ELISA Plates Modified with Methylacrylic Acid by 60Co Irradiation

2014 ◽  
Vol 670-671 ◽  
pp. 219-223
Author(s):  
Di Chen ◽  
Hua Shan Wang
Keyword(s):  
Room Temperature ◽  
Volume Concentration ◽  
Water Solution ◽  
Carboxyl Group ◽  
Optimum Conditions ◽  
Water Contact ◽  
Radiative Intensity ◽  
Enzyme Label ◽  
Γ Ray ◽  
Surface Modified

Surface modified ELISA plates grafted with methylacrylic acid (MAA) were prepared by60Co γ-Ray irradiation at room temperature in MAA water solution. The optimum conditions of modification were decided by the water contact angle and the absorbency of polystyrene enzyme label plate. FTIR, XRD spectra and AFM images show that MAA and its polymer have been grafted to the surface of the ELISA plates induced by60Co γ-Ray irradiation. The volume concentration of MAA aqueous solutions reached 10%, and the radiative intensity was 10kGy, and correspondingly, the content of carboxyl group on the surface of ELISA plates reached 0.30mmol/cm2.

Growth of Large-Area Cd₀.₉Zn₀.₁Te Single Crystals and Fabrication of Pixelated Guard-Ring Detector for Room-Temperature γ-Ray Detection

2020 ◽  
Vol 67 (8) ◽  
pp. 1946-1951
Author(s):  
Mohsin Sajjad ◽  
Sandeep K. Chaudhuri ◽  
Joshua W. Kleppinger ◽  
Krishna C. Mandal
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Guard Ring ◽  
Large Area ◽  
Γ Ray

scholarly journals TlSn2I5, a Robust Halide Antiperovskite Semiconductor for γ-Ray Detection at Room Temperature

ACS Photonics ◽  
2017 ◽  
Vol 4 (7) ◽  
pp. 1805-1813 ◽  
Author(s):  
Wenwen Lin ◽  
Constantinos C. Stoumpos ◽  
Zhifu Liu ◽  
Sanjib Das ◽  
Oleg Y. Kontsevoi ◽  
...  
Keyword(s):  
Room Temperature ◽  
Γ Ray

scholarly journals Electric Quadrupole Interaction of 20F in a KZnF3 Single Crystal

1976 ◽  
Vol 31 (11) ◽  
pp. 1298-1302 ◽  
Author(s):  
H. Ackermann ◽  
D. Dubbers ◽  
M. Grupp ◽  
P. Heitjans ◽  
H.-J. Stöckmann ◽  
...  
Keyword(s):  
Single Crystal ◽  
Room Temperature ◽  
Electric Quadrupole ◽  
Quadrupole Coupling Constant ◽  
Electric Quadrupole Interaction ◽  
Coupling Constant ◽  
Nmr Spectrum ◽  
Quadrupole Coupling ◽  
Γ Ray ◽  
Anisotropy Measurement

Abstract Nuclear magnetic resonance measurements were carried out on neutron activated 20F(T1/2=11s) nuclei in a single crystal of KZnF3. The quadrupolar splitted NMR spectrum, detected via the 20F β-radiation asymmetry, could be observed using a radio frequency modulation technique. The quadrupole coupling constant was determined to e2 q Q/h= + (12.0 ± 1.5) MHz at room temperature. The sign of e2 q Q was obtained from a simultaneous γ-ray anisotropy measurement on the succeeding 20Ne transition. Utilising a calculated field gradient of the fluorine atom, an fQ = 4.6% is determined. This value is compared with literature data of similar compounds.

MEASUREMENT THE EFFECT OF γ-IRRADIATION DOSES ON AlCu8.5 BY POSITRON ANNIHILATION DOPPLER-BROADENING SPECTROSCOPY

2007 ◽  
Vol 21 (22) ◽  
pp. 3901-3907
Author(s):  
M. A. ABDEL-RAHMAN ◽  
M. ABDEL-RAHMAN ◽  
M. ABO-ELSOUD ◽  
M. F. EISSA ◽  
YAHIA A. LOTFY ◽  
...  
Keyword(s):  
Positron Annihilation ◽  
Irradiation Dose ◽  
Room Temperature ◽  
Doppler Broadening ◽  
Γ Irradiation ◽  
Second Stage ◽  
S Parameter ◽  
Controlling Mechanism ◽  
Γ Ray ◽  
Two Stages

The effect of irradiation dose (kGy) on a set of AlCu 8.5 samples has been studied. The samples were irradiated to doses of 10, 30, 50, 70, 100, 300, 500, 700 and 1000 kGy of 60 Co γ-source at room temperature. The effect of γ-ray irradiation on the values of the S- and W-parameters reveals two stages. In the first stage, the S-parameter increases, while the W-parameter decreases up to 70 kGy. In the second stage, the S- and W-parameters decrease and increase respectively in the dose region from 100 to 1000 kGy. The dominant controlling mechanism of the S- and W-parameters was observed.

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