scholarly journals Dose response of the E1’ centre in quartz

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shin Toyoda ◽  
Mana Amimoto
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Dose Response ◽  
Signal Intensity ◽  
Oxygen Vacancies ◽  
Gamma Ray ◽  
Natural Quartz ◽  
Spin Resonance ◽  
Gamma Ray Irradiation

Abstract The E1’ centre is one of the most common paramagnetic defects observed by electron spin resonance (ESR) in natural quartz, the formation of which is, however, quite complicated. The dose response to gamma ray irradiation of the E1’ centre in natural quartz was systematically investigated in the present study to find that its dose response depends on the heating conditions of the sample before irradiation. The signal intensity decreases on irradiation when quartz has been heated up to 300°C, while it increases when heated above 400°C. The phenomena can be explained by the electronic processes that heating supplies electronic holes to the oxygen vacancies while gamma ray irradiation supplies electrons.

scholarly journals ESR and Radiocarbon Dating of Gut Strings from Early Plucked Instruments

2020 ◽  
Vol 3 (1) ◽  
pp. 13 ◽  
Author(s):  
Sumiko Tsukamoto ◽  
Taro Takeuchi ◽  
Atsushi Tani ◽  
Yosuke Miyairi ◽  
Yusuke Yokoyama
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Signal Intensity ◽  
Radiocarbon Dating ◽  
Oxidized Iron ◽  
Spin Resonance ◽  
First Time ◽  
Great Revival

Early European plucked instruments have recently experienced a great revival, but a few aspects remain unknown (e.g., the gauge of gut strings). Here we report, for the first time, that the electron spin resonance (ESR) signal intensity of oxidized iron, Fe(III), from gut strings at g = 2 increases linearly with age within a few hundred years. The signal increase in the remaining old strings on early instruments can be used to judge if they are as old as or younger than the instrument. Obtaining the authenticity information of gut strings contributes to the revival of the old instruments and the music.

Electron spin resonance study of the interaction of tert-butyl hydroperoxide with zinc oxide

1968 ◽  
Vol 46 (13) ◽  
pp. 2329-2331 ◽  
Author(s):  
Maurice Codell ◽  
Henry Gisser ◽  
R. D. Iyengar
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Oxygen Vacancies ◽  
Electron Spin Resonance Study ◽  
Resonance Signal ◽  
Tertiary Butyl ◽  
Butyl Hydroperoxide ◽  
Tert Butyl Hydroperoxide ◽  
Spin Resonance ◽  
Spin Resonance Study

The complexity of the electron spin resonance signal, appearing at g = 1.96 on ZnO vacuum outgassed at higher temperatures, has been examined by adsorption of tertiary butyl hydroperoxide (TBHP). Two individual signals with g values 1.961 and 1.965 observed following TBHP adsorption have been attributed to Zn+ ions and oxygen vacancies with trapped electrons.

scholarly journals Investigation of the temporal change of the sources of Aeolian dust delivered to East Asia using electron spin resonance signals in quartz

2013 ◽  
Vol 40 (4) ◽  
pp. 355-359 ◽  
Author(s):  
Yuya Yamamoto ◽  
Shin Toyoda ◽  
Kana Nagasima ◽  
Yasuhito Igarashi ◽  
Ryuji Tada
Keyword(s):  
Electron Spin Resonance ◽  
Atmospheric Deposition ◽  
East Asia ◽  
Electron Spin ◽  
Oxygen Vacancies ◽  
Temporal Change ◽  
Recent Past ◽  
Atmospheric Depositions ◽  
Spin Resonance ◽  
Two Cities

Abstract The temporal change in the number of oxygen vacancies in quartz was investigated by ob-serving the E1’ center in the atmospheric depositions collected at two cities in Japan in the recent past. The depositions collected at Fukuoka in March show the ESR intensities being correlated with the sum of the number of the days, in the month, on which Kosa was observed while no such correlation was found in the deposition those collected at Akita but a trend of decrease with time. The present results suggest that the number of oxygen vacancies in quartz might be useful to estimate quantitatively the contribution of the dust originated from China to the atmospheric deposition in Japan.

Electron Spin Resonance of Gamma-Ray Irradiated NaNO3

1964 ◽  
Vol 19 (10) ◽  
pp. 1981-1981 ◽  
Author(s):  
Kazuo Gesi ◽  
Yukio Kazumata
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Gamma Ray ◽  
Spin Resonance

scholarly journals An Electron Spin Resonance Study of .GAMMA.-Ray Irradiated Pepper

RADIOISOTOPES ◽  
2003 ◽  
Vol 52 (5) ◽  
pp. 224-230 ◽  
Author(s):  
Mitsuko UKAI ◽  
Naruki HAMAYA ◽  
Akane ICHII ◽  
Aika ABE
Keyword(s):  
Electron Spin Resonance ◽  
Electron Spin ◽  
Gamma Ray ◽  
Electron Spin Resonance Study ◽  
Spin Resonance ◽  
Spin Resonance Study
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