dorsal/arxiv
View SchemaHalflife of 56Ni in cosmic rays
| Authors | J. Lund Fisker, G. Martinez-Pinedo, K. Langanke |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9902005 |
| URL | https://arxiv.org/abs/nucl-th/9902005 |
| Journal | Eur.Phys.J. A5 (1999) 229-231 |
Abstract
A measurement of the 56Ni cosmic ray abundance has been discussed as a possible tool to determine the acceleration time scale of relativistic particles in cosmic rays. This conjecture will depend on the halflife of totally ionized 56Ni which can only decay by higher-order forbidden transitions. We have calculated this halflife within large-scale shell model calculations and find t_{1/2} \approx 4 \times 10^4 years, only slightly larger than the currently available experimental lower limit, but too short for 56Ni to serve as a cosmic ray chronometer.
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"abstract": "A measurement of the 56Ni cosmic ray abundance has been discussed as a\npossible tool to determine the acceleration time scale of relativistic\nparticles in cosmic rays. This conjecture will depend on the halflife of\ntotally ionized 56Ni which can only decay by higher-order forbidden\ntransitions. We have calculated this halflife within large-scale shell model\ncalculations and find t_{1/2} \\approx 4 \\times 10^4 years, only slightly larger\nthan the currently available experimental lower limit, but too short for 56Ni\nto serve as a cosmic ray chronometer.",
"arxiv_id": "nucl-th/9902005",
"authors": [
"J. Lund Fisker",
"G. Martinez-Pinedo",
"K. Langanke"
],
"categories": [
"nucl-th",
"astro-ph"
],
"journal_ref": "Eur.Phys.J. A5 (1999) 229-231",
"title": "Halflife of 56Ni in cosmic rays",
"url": "https://arxiv.org/abs/nucl-th/9902005"
},
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