Details

Autor(en) / Beteiligte

• Chakraborty, A.
• Krishichayan
• Ghugre, S.S.
• Goswami, R.
• Mukhopadhyay, S.
• Pattabiraman, N.S.
• Ray, S.
• Sinha, A.K.
• Sarkar, S.
• Madhusudhana Rao, P.V.
• Garg, U.
• Basu, S.K.
• Chaturvedi, L.
• Dhal, A.
• Sinha, R.K.
• Govil, I.M.
• Chatterjee, M.B.
• Sarkar, M. Saha
• Bhowmik, R.K.
• Jhingan, A.
• Department of Physics, University of Burdwan, Burdwan 713104
• Department of Nuclear Physics, Andhra University, Waltair 530003
• Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556
• Variable Energy Cyclotron Center, Sector-I/AF, Bidhan Nagar, Kolkata 700064
• Department of Physics, Banaras Hindu University, Varanasi 221005
• Department of Physics, Panjab University, Chandigarh 160014
• Saha Institute of Nuclear Physics, Sector-I/AF, Bidhan Nagar, Kolkata 700064
• Nuclear Science Center, Aruna Asaf Ali Marg, New Delhi 110067

Titel

Lifetime measurements of microsecond isomers in the N=48 nuclei {sup 88}Zr and {sup 90}Mo using recoil-isomer tagging

Ist Teil von

• Physical review. C, Nuclear physics, 2004-07, Vol.70 (1)

Ort / Verlag

United States

Erscheinungsjahr

2004

Quelle

APS_美国物理学会过刊

Beschreibungen/Notizen

• The recoil-isomer tagging technique has been used to study the isomeric states of nuclei in the vicinity of the N=50 shell closure. The nuclei of interest were separated from the projectilelike nuclei and other evaporation residues and transported to the focal plane of a recoil separator. The decay of the tagged isomer was studied at the focal plane using a high-purity Ge detector. The prompt transitions feeding the isomer were detected in an array of Clover Ge detectors placed around the target. The measured half-lives of the 8{sup +} isomers in {sup 88}Zr and {sup 90}Mo are 1.41{sub (-0.09)}{sup (+0.12)} {mu}s and 1.17{sub (-0.07)}{sup (+0.19)} {mu}s, respectively. The corresponding transition probabilities are in reasonable agreement with the predictions of shell model calculations. The systematics of effective charges (e{sub p} and e{sub n}) for N=48 nuclei are qualitatively understood in these calculations.