| Автор | T Watanabe |
| Автор | H Ejiri |
| Автор | K Okada |
| Автор | N Kamikubota |
| Автор | H Sano |
| Автор | T Shima |
| Автор | J Tanaka |
| Автор | K Fushimi |
| Автор | H Kinoshita |
| Автор | Y Nagai |
| Автор | T Shibata |
| Дата выпуска | 1991-12-01 |
| dc.description | The normal double beta decay with two neutrinos (2 nu beta beta ) has been studied for <sup>100</sup>Mo in order to study experimentally the 2 nu beta beta nuclear matrix element (M<sub>2 nu </sub>). A low background spectrometer, ELEGANTS-IV, which consists of eleven Si(Li) beta -detectors and surrounding 4 pi -NaI(Tl) gamma -detectors, has been used for the present experiment. <sup>nat</sup>Mo and 94% enriched <sup>100</sup>Mo source-disks have been measured simultaneously for 8006 hours. A lower limit for the 2 nu half-life was obtained as 7.9(6.2)*10<sup>18</sup> years at the 68(90)% confidence level. The present experiment suggests a finite 2 nu half-life of the order of 10<sup>19</sup> years. However, it is necessary to estimate the contribution from contamination in the <sup>100</sup>Mo disks by a Monte Carlo calculation. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Two-neutrino double beta decay of <sup>100</sup>Mo with ELEGANTS-IV |
| Тип | paper |
| DOI | 10.1088/0954-3899/17/S/023 |
| Electronic ISSN | 1361-6471 |
| Print ISSN | 0954-3899 |
| Журнал | Journal of Physics G: Nuclear and Particle Physics |
| Том | 17 |
| Первая страница | S217 |
| Последняя страница | S220 |
| Аффилиация | T Watanabe; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | H Ejiri; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | K Okada; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | N Kamikubota; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | H Sano; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | T Shima; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | J Tanaka; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | K Fushimi; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | H Kinoshita; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | Y Nagai; Dept. of Phys., Osaka Univ., Japan |
| Аффилиация | T Shibata; Dept. of Phys., Osaka Univ., Japan |
| Выпуск | S |
