Experimental investigation of the band in as a 尾-vibrational band

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• 作者：J. Smallcombe^a ; ^{james.smallcombe@outlook.com" class="auth_mail} ; P.J. Davies^a ; C.J. Barton^a ; D.G. Jenkins^a ; L.L. Andersson^b ; P.A. Butler^b ; D.M. Cox^b ; R.-D. Herzberg^b ; A. Mistry^b ; E. Parr^b ; T. Grahn^c ; P.T. Greenlees^c ; K. Hauschild^c ; ^d ; A. Herzan^c ; U. Jakobsson^c ; P. Jones^c ; R. Julin^c ; S. Juutinen^c ; S. Ketelhut^c ; M. Leino^c ; A. Lopez-Martens^c ; ^d ; P. Nieminen^c ; J. Pakarinen^c ; P. Papadakis^c ; ^b ; P. Peura^c ; P. Rahkila^c ; S. Rinta-Antila^c ; P. Ruotsalainen^c ; M. Sandzelius^c ; J. Saré ; n^c ; C. Scholey^c ; J. Sorri^c ; J. Uusitalo^c
• 关键词：Internal conversion electrons ; Gamma ray ; Spectroscopy ; Electric monopole ; Collective models ; Rare-earth
• 刊名：Physics Letters B
• 出版年：1 May 2014
• 年：2014
• 卷：732
• 期：Complete
• 页码：161-166
• 全文大小：315 K

文摘

A study of ${}^{154}\text{Sm}$ through 纬  -ray and internal conversion electron coincidence measurements was performed using the Silicon And GErmanium spectrometer (SAGE). An upper limit for the ${蟻}^2(E0;2_2^{+}\to 2_1^{+})$ and measurement of the ${蟻}^2(E0;4_2^{+}\to 4_1^{+})$ monopole transitions strengths were determined. The extracted transition strength for each is significantly lower than that predicted by either the Bohr and Mottelson 尾  -vibration description or the interacting boson model. Hence, the long standing interpretation of these states as a collective band built on the $0_2^{+}$ state, which is conventionally assigned as a Bohr and Mottelson 尾 vibration is questionable.