Temperature dependence of anomalous luminescence decay:  Theory and experiment

2002 ◽  
Vol 66 (15) ◽  
Author(s):  
E. Mihóková ◽  
L. S. Schulman ◽  
M. Nikl ◽  
B. Gaveau ◽  
K. Polák ◽  
...  
1995 ◽  
Vol 38 (2) ◽  
pp. 279-286 ◽  
Author(s):  
J.P. Bailbé ◽  
L. Andrieux ◽  
A. Cazarré ◽  
T. Camps ◽  
A. Marty ◽  
...  

1999 ◽  
Vol 38 (Part 1, No. 2B) ◽  
pp. 1094-1097 ◽  
Author(s):  
Tsuyoshi Okuno ◽  
Hong-Wen Ren ◽  
Mitsuru Sugisaki ◽  
Kenichi Nishi ◽  
Shigeo Sugou ◽  
...  

2015 ◽  
Vol 91 (9) ◽  
Author(s):  
Zhilin Li ◽  
Lianlian Chen ◽  
Sheng Meng ◽  
Liwei Guo ◽  
Jiao Huang ◽  
...  

1999 ◽  
Vol 60 (2) ◽  
pp. 959-965 ◽  
Author(s):  
Marek Grinberg ◽  
Irena Sokólska ◽  
Stefan Kück ◽  
W. Jaskólski

1998 ◽  
Vol 15 (6) ◽  
pp. 455-456 ◽  
Author(s):  
Chao-shu Shi ◽  
Jie Deng ◽  
Zheng-fu Han ◽  
Zhi-jian Xie ◽  
Jing-ying Liao ◽  
...  

2005 ◽  
Vol 351 (21-23) ◽  
pp. 1937-1940 ◽  
Author(s):  
A. Cannizzo ◽  
S. Agnello ◽  
M. Cannas ◽  
N. Chiodini ◽  
M. Leone ◽  
...  

1965 ◽  
Vol 43 (11) ◽  
pp. 1925-1933 ◽  
Author(s):  
M. Sayer ◽  
W. R. Hardy

Measurements of the luminescence decay time have been made for a number of single crystals of calcium tungstate for excitation by cathode rays, α and γ radiation. The value of the decay time was found to depend both on the crystal used and on the nature of the excitation. For γ-ray excitation, the decay time was in the range 6.1 to 6.8 μ sec. The values obtained for cathode-ray excitation were, in general, 20–30% higher for all crystals, while for α excitation, several crystals showed no change in decay time, while others showed a decay time 20% faster. Measurements of the temperature dependence of the decay time and thermoluminescence experiments indicate that these differences in behavior can be attributed to differences in the density of energy traps and nonradiative centers in the crystal and to a rise in temperature in the excited channel.


1982 ◽  
Vol 60 (4) ◽  
pp. 517-542 ◽  
Author(s):  
D. M. Schrader ◽  
R. E. Svetic

Calculations of positron–atom and positron–molecule scattering are reviewed. The polarized orbital results of the York group are found to be of the same reliability as recent experimental determinations in the elastic region for the noble gases. The temperature dependence of the annihilation rate is suggested as a sensitive point of contact between theory and experiment. Using a new, direct experimental determination of the positronium formation cross section below the ionization threshold for argon and helium, we have made an improved Ore-type estimate of the positronium fraction of the noble gases. The new estimates agree perfectly with experiment for the three lighter gases. However, for krypton and xenon, the new estimates are much too high, which suggests the existence of an unknown process which suppresses or depletes positronium. Recent calculations on other atoms and on simple diatomic molecules are also reviewed.


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