Effect of Coriolis mixing on lifetime of isomeric states in heavy nuclei
| Parent link: | Physical Review C Vol. 106, iss. 1.— 2022.— [014310, 8 р.] |
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| সংস্থা লেখক: | |
| অন্যান্য লেখক: | , , , |
| সংক্ষিপ্ত: | Title screen The effect of Coriolis K mixing on the γ decay of one-quasiparticle isomeric states is examined in transfermium nuclei with neutron number N=153. We consider a core-plus-quasiparticle coupling in which the K mixing sharply increases if the isomeric quasiparticle state closely approaches the rotational state with the same angular momentum I, but built on another quasiparticle state which is either directly coupled to the isomeric (ΔK=1) or connected with it through the intermediate mixing quasiparticle orbitals (ΔK>1). This mechanism is likely to explain the 38-ns Kπ=7/2+ isomer in 251Cf which is quasidegenerated with an Iπ=7/2+ rotation state built on Kπ=1/2+. Our model explains the enhancement of its decay by three orders of magnitude compared to the Kπ=7/2+ isomer in 249Cm. We suggest that the same mechanism could be of general importance for the isomer decay properties in a wide range of heavy odd-mass nuclei. |
| প্রকাশিত: |
2022
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| বিষয়গুলি: | |
| অনলাইন ব্যবহার করুন: | https://doi.org/10.1103/PhysRevC.106.014310 |
| বিন্যাস: | বৈদ্যুতিক গ্রন্থের অধ্যায় |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=669486 |
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| 200 | 1 | |a Effect of Coriolis mixing on lifetime of isomeric states in heavy nuclei |f T. M. Shneydman, N. A. Minkov, G. G. Adamyan, N. V. Antonenko | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 36 tit.] | ||
| 330 | |a The effect of Coriolis K mixing on the γ decay of one-quasiparticle isomeric states is examined in transfermium nuclei with neutron number N=153. We consider a core-plus-quasiparticle coupling in which the K mixing sharply increases if the isomeric quasiparticle state closely approaches the rotational state with the same angular momentum I, but built on another quasiparticle state which is either directly coupled to the isomeric (ΔK=1) or connected with it through the intermediate mixing quasiparticle orbitals (ΔK>1). This mechanism is likely to explain the 38-ns Kπ=7/2+ isomer in 251Cf which is quasidegenerated with an Iπ=7/2+ rotation state built on Kπ=1/2+. Our model explains the enhancement of its decay by three orders of magnitude compared to the Kπ=7/2+ isomer in 249Cm. We suggest that the same mechanism could be of general importance for the isomer decay properties in a wide range of heavy odd-mass nuclei. | ||
| 461 | |t Physical Review C | ||
| 463 | |t Vol. 106, iss. 1 |v [014310, 8 р.] |d 2022 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 701 | 1 | |a Shneydman |b T. M. |g Timur Markovich | |
| 701 | 1 | |a Minkov |b N. A. |g Nikolay Alekseevich | |
| 701 | 1 | |a Adamyan |b G. G. |g Gurgen Grigorjevich | |
| 701 | 1 | |a Antonenko |b N. V. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1964- |g Nikolay Viktorovich |3 (RuTPU)RU\TPU\pers\35905 |9 19046 | |
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| 856 | 4 | |u https://doi.org/10.1103/PhysRevC.106.014310 | |
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