Generation mechanisms of paramagnetic centers by gamma‐ray irradiation at and near the Si/SiO2interface

1993 ◽  
Vol 73 (12) ◽  
pp. 8519-8525 ◽  
Author(s):  
Koichi Awazu ◽  
Kikuo Watanabe ◽  
Hiroshi Kawazoe
Keyword(s):  
Gamma Ray ◽  
Paramagnetic Centers ◽  
Gamma Ray Irradiation ◽  
Generation Mechanisms

The Structure of SiO2-Sol-Gel Glasses Produced from Gels with Various Mole-Water per Mole-TEOS Ratios

1985 ◽  
Vol 61 ◽  
Author(s):  
George Kordas
Keyword(s):  
Gamma Ray ◽  
Sol Gel ◽  
Heat Treating ◽  
Paramagnetic Centers ◽  
Paramagnetic Defect ◽  
Defect Centers ◽  
Gamma Ray Irradiation ◽  
Gel Glasses

ABSTRACTSiO2-gels produced with 4,8, and 16 mol water per mol TEOS were densified up to 1000°C and then exposed to gamma-ray irradiation in order to produce paramagnetic defect centers. Various paramagnetic states were detected during densification of these gels, the formation of which depends on the mol water per mol TEOS ratio. In the gels O−2 ions were detected. The paramagnetic centers detected in the n = 16 gel with TH = 900°C were attributed to a non-bridging oxygen and an E'1-center. Three different O−2 ions, probably in interstitial positions, were detected in the n = 16-gel with TH = 1000°C. The CO−2 center was observed in the n = 8 gel with TH = 900°C. A variety of new components occur at TH = 1000°C in the n = 8 gel, the origin of which remains unresolved at present. The CH3, CO−2, and E1′-centers were detected in the n = 4 gel with TH = 700°C. The CO−2 and E′1 centers were preserved after heat treating the n = 4 gel at TH = 1000°C.

Water-rock reactions during gamma-ray irradiation

1996 ◽  
Vol 11 (3) ◽  
pp. 461-469 ◽  
Author(s):  
C YONEZAWA ◽  
T TANAKA ◽  
H KAMIOKA
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Irradiation

scholarly journals EFFECT OF GAMMA RAY IRRADIATION AND FRYING ON THE THIAMINE CONTENT OF BACON

1989 ◽  
Vol 12 (2) ◽  
pp. 115-134 ◽  
Author(s):  
DONALD W. THAYER ◽  
JAMES J. SHIEH ◽  
RONALD K. JENKINS ◽  
JOHN G. PHILLIPS ◽  
EUGEN WIERBICKI ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Thiamine Content ◽  
Gamma Ray Irradiation

Magnetic separation of amino acids by gold/iron-oxide composite nanoparticles synthesized by gamma-ray irradiation

2005 ◽  
Vol 293 (1) ◽  
pp. 106-110 ◽  
Author(s):  
Takuya Kinoshita ◽  
Satoshi Seino ◽  
Yoshiteru Mizukoshi ◽  
Yohei Otome ◽  
Takashi Nakagawa ◽  
...  
Keyword(s):  
Amino Acids ◽  
Iron Oxide ◽  
Magnetic Separation ◽  
Gamma Ray ◽  
Composite Nanoparticles ◽  
Oxide Composite ◽  
Gamma Ray Irradiation

One-step synthesis of well-dispersed polypyrrole copolymers under gamma-ray irradiation

2021 ◽  
Vol 12 (5) ◽  
pp. 645-649
Author(s):  
Yu Gu ◽  
Yuqing Qiao ◽  
Yusen Meng ◽  
Ming Yu ◽  
Bowu Zhang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gamma Ray ◽  
Gamma Ray Irradiation ◽  
One Step ◽  
First Time

Herein, we report for the first time the synthesis of polypyrrole copolymers with good solvent-dispersibility under gamma-ray irradiation at room temperature in air.

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