Abstract
For neutron-deficient 124,125,127-130La, QEC measurement has been performed by determining β+-ray maximum energies. The radioactive sources were prepared by on-line mass-separation following the fusion-evaporation reactions 92,natMo(36Ar, 3pxn). The β+-rays were measured with an HPGe detector in β - γ coincidence mode in which γ-rays were detected with another HPGe detector for specifying an excited state in daughter nucleus. By unfolding the β+-ray spectra using experimental response functions, the QEC-values of 124,125,127,130La were newly obtained, and those of 128,129La were improved in their accuracy. The QEC-values obtained and the resulting atomic masses are compared with theoretical predictions. The results of half-life calculation and two-neutron separation energies using the experimental QEC-values are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 3405-3413 |
| Number of pages | 9 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 67 |
| Issue number | 10 |
| Publication status | Published - 1998 Oct |
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Keywords
- β - γ coincidence
- La[from Mo(Ar, 3pxn)
- La[from Mo(Ar, 3pxn)
- E = 5.4 MeV/u]
- HPGe
- Measured Q
- Radioactivity
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
QEC Measurement of 124,125,127-130La. / Kojima, Yasuaki; Asai, Masato; Osa, Akihiko; Koizumi, Mitsuo; Sekine, Toshiaki; Shibata, Michihiro; Yamamoto, Hiroshi; Kawade, Kiyoshi; Tachibana, Takahiro.
In: Journal of the Physical Society of Japan, Vol. 67, No. 10, 10.1998, p. 3405-3413.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - QEC Measurement of 124,125,127-130La
AU - Kojima, Yasuaki
AU - Asai, Masato
AU - Osa, Akihiko
AU - Koizumi, Mitsuo
AU - Sekine, Toshiaki
AU - Shibata, Michihiro
AU - Yamamoto, Hiroshi
AU - Kawade, Kiyoshi
AU - Tachibana, Takahiro
PY - 1998/10
Y1 - 1998/10
N2 - For neutron-deficient 124,125,127-130La, QEC measurement has been performed by determining β+-ray maximum energies. The radioactive sources were prepared by on-line mass-separation following the fusion-evaporation reactions 92,natMo(36Ar, 3pxn). The β+-rays were measured with an HPGe detector in β - γ coincidence mode in which γ-rays were detected with another HPGe detector for specifying an excited state in daughter nucleus. By unfolding the β+-ray spectra using experimental response functions, the QEC-values of 124,125,127,130La were newly obtained, and those of 128,129La were improved in their accuracy. The QEC-values obtained and the resulting atomic masses are compared with theoretical predictions. The results of half-life calculation and two-neutron separation energies using the experimental QEC-values are also discussed.
AB - For neutron-deficient 124,125,127-130La, QEC measurement has been performed by determining β+-ray maximum energies. The radioactive sources were prepared by on-line mass-separation following the fusion-evaporation reactions 92,natMo(36Ar, 3pxn). The β+-rays were measured with an HPGe detector in β - γ coincidence mode in which γ-rays were detected with another HPGe detector for specifying an excited state in daughter nucleus. By unfolding the β+-ray spectra using experimental response functions, the QEC-values of 124,125,127,130La were newly obtained, and those of 128,129La were improved in their accuracy. The QEC-values obtained and the resulting atomic masses are compared with theoretical predictions. The results of half-life calculation and two-neutron separation energies using the experimental QEC-values are also discussed.
KW - β - γ coincidence
KW - La[from Mo(Ar, 3pxn)
KW - La[from Mo(Ar, 3pxn)
KW - E = 5.4 MeV/u]
KW - HPGe
KW - Measured Q
KW - Radioactivity
UR - http://www.scopus.com/inward/record.url?scp=0032262975&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032262975&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032262975
VL - 67
SP - 3405
EP - 3413
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 10
ER -