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The β Decay of 21 N
- Source :
- Chinese Physics Letters. 25:1992-1995
- Publication Year :
- 2008
- Publisher :
- IOP Publishing, 2008.
-
Abstract
- The β-delayed neutron and γ energy spectra taken from the decay of neutron-rich nucleus 21N were measured by using the β–γ and β – n coincidence detection method. Thirteen new neutron groups ranging from 0.28MeV to 4.98MeV and with a total branching ratio of 88.7 ± 4.2% were observed and presented. One γ transition with an energy of 1222keV emitted from the excited state of 21O, and four γ transitions with energies of 1674, 2397, 2780, and 3175keV emitted from the excited states of 20O were identified in the β decay chain of 21N. The β decay half-life for 21N is determined to be 82.9 ± 1.9 ms. The uncertainty of half-life is much smaller than the previous result.
Details
- ISSN :
- 17413540 and 0256307X
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Chinese Physics Letters
- Accession number :
- edsair.doi...........09c05c9a48990b19e6baf9abcc38262a