<abstract xmlns="http://www.w3.org/1999/xhtml">The alpha effectiveness value (k-value) for the ESR (Electron Spin Resonance) signal due to SO3- in barite was revised by comparing the dose responses of the signal intensities to gamma rays and to 4 MeV He+ ion doses in natural sea-floor hydrothermal barite samples actually used for dating. Of the values obtained for a synthetic, a natural old, and a natural young samples, the one for the natural young sample is tentatively adopted, which is 0.053 ± 0.006, although further works are still necessary to establish this value.</abstract>

The alpha effectiveness value (k-value) for the ESR (Electron Spin Resonance) signal due to SO3- in barite was revised by comparing the dose responses of the signal intensities to gamma rays and to 4 MeV He+ ion doses in natural sea-floor hydrothermal barite samples actually used for dating. Of the values obtained for a synthetic, a natural old, and a natural young samples, the one for the natural young sample is tentatively adopted, which is 0.053 ± 0.006, although further works are still necessary to establish this value.

The alpha effectiveness of the dating ESR signal in barite: possible dependence with age

Department of Applied Physics, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005,

Research Institute of Natural Sciences, Okayama University of Science, 1-1 Ridai-cho, Kita-ku, Okayama 700-0005,

Department of Earth and Planetary Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395,

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The alpha effectiveness value (k-value) for the ESR (Electron Spin Resonance) signal due to SO3- in barite was revised by comparing the dose responses of the...

The alpha effectiveness of the dating ESR signal in barite: possible dependence with age

Published Online: Dec 30, 2016

Page range: 174 - 178

Received: Feb 14, 2016

Accepted: Oct 19, 2016

DOI: https://doi.org/10.1515/geochr-2015-0043

Keywords
barite, hydrothermal activities, ESR dating, alpha effectiveness

© 2015 T. Fujiwara.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The alpha effectiveness of the dating ESR signal in barite: possible dependence with age

Published Online: Dec 30, 2016

Page range: 174 - 178

Received: Feb 14, 2016

Accepted: Oct 19, 2016

DOI: https://doi.org/10.1515/geochr-2015-0043

Keywordsbarite, hydrothermal activities, ESR dating, alpha effectiveness

© 2015 T. Fujiwara.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
barite, hydrothermal activities, ESR dating, alpha effectiveness