Quantum beats measured by positron annihilation methods, 2; OH radicals in water

Hirade, Tetsuya ; Lee, J.

The quantum beats caused by the hyperfine coupling of OH radicals in water were observed by the time resolved positron annihilation -ray Doppler broadening measurements. There were two kinds of beats observed at 18 $^{circ}$ C and 25 $^{circ}$ C. The hyperfine coupling constants of OH radicals are smaller at higher temperatures. These things indicate the two-state model of water structure. If there is a continuous state of water structure it should be impossible to measure the quantum beats. It is possible to say that there are two states of water structure and the structures are affected by temperatures.

Language	:	Japanese
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Meeting title	:	第46回アイソトープ・放射線研究発表会
Held date	:	2009/07
Location (city)	:	東京
Location (country)	:	日本
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Keywords	:	no keyword
Research Facility	:	第4研究棟
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Registration No. : BB20090552
JAEA Abstracts No. :
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