Induced optical absorption in gamma, neutron and ultraviolet irradiated fused quartz and silica

被引:167
作者
Marshall, CD
Speth, JA
Payne, SA
机构
[1] Lawrence Livermore Natl. Laboratory, PO Box 5508, Livermore
关键词
D O I
10.1016/S0022-3093(96)00606-0
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We have investigated the effects of ultraviolet (4.7 eV), gamma (similar to 1 MeV), and neutron (similar to 1 MeV) irradiations on the optical properties of SiO2 glass samples. Samples from various sources were studied, including synthetic fused silicas and natural fused quartz. Several relationships among the different types of ionizing radiation were examined. For example, both UV light and gamma rays convert the germanium impurity to the B, absorption band in fused quartz samples. On the other hand, only neutrons are capable of inducing the oxygen deficient centers (ODCs) with the similar to krad-level doses employed here; the ODCs are produced by way of direct knock-on collisions. The ODCs generated by the neutrons can be converted into E' centers afterwards with gamma-rays. Transient grating and pump-probe optical experiments show that only a small fraction of the induced defect absorption remains permanently, while nearly all recover to the original condition after a UV pulse. Finally, thermal annealing experiments indicate that the radiation-induced defects can be annealed away at temperatures >350 degrees C. We compare the impacts of gamma, neutron, and ultraviolet radiation in terms of the mechanism by which defects are generated.
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页码:59 / 73
页数:15
相关论文
共 36 条
[1]   EVIDENCE FOR PAIR GENERATION OF AN E' CENTER AND A NONBRIDGING OXYGEN-HOLE CENTER IN GAMMA-RAY-IRRADIATED FLUORINE-DOPED LOW-OH SYNTHETIC SILICA GLASSES [J].
ARAI, K ;
IMAI, H ;
ISOYA, J ;
HOSONO, H ;
ABE, Y ;
IMAGAWA, H .
PHYSICAL REVIEW B, 1992, 45 (18) :10818-10821
[2]  
BEALL GH, 1994, SILICA PHYSICAL BEHA, P473
[3]  
BOOKLESS WA, 1994, NATL IGNITION FACILI
[4]  
Bruckner R., 1970, Journal of Non-Crystalline Solids, V5, P123, DOI 10.1016/0022-3093(70)90190-0
[5]   RADIATION EFFECTS IN FCC METALS AND INTERMETALLIC COMPOUNDS - A MOLECULAR-DYNAMICS COMPUTER-SIMULATION STUDY [J].
DELARUBIA, TD ;
GUINAN, MW ;
CARO, A ;
SCHERRER, P .
RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1994, 130 :39-54
[6]  
DELARUBIA TD, 1992, J NUCL MATER, V191, P108, DOI 10.1016/0022-3115(92)90737-6
[7]  
GRISCOM DL, 1986, SPIE, V541, P38
[8]  
GRISCOM DL, 1991, J CERAM SOC JPN, V99, P923, DOI DOI 10.2109/JCERSJ.99.923
[9]   NEUTRON-IRRADIATION EFFECTS IN AMORPHOUS SIO2 - OPTICAL-ABSORPTION AND ELECTRON-PARAMAGNETIC-RESONANCE [J].
GUZZI, M ;
MARTINI, M ;
PALEARI, A ;
PIO, F ;
VEDDA, A ;
AZZONI, CB .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (43) :8105-8116
[10]   DEPENDENCE OF DEFECTS INDUCED BY EXCIMER LASER ON INTRINSIC STRUCTURAL DEFECTS IN SYNTHETIC SILICA GLASSES [J].
IMAI, H ;
ARAI, K ;
HOSONO, H ;
ABE, Y ;
ARAI, T ;
IMAGAWA, H .
PHYSICAL REVIEW B, 1991, 44 (10) :4812-4818