R P SINGH⁺, S MURULITHAR⁺ and R K BHOWMIK⁺

 Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700 064, India

* Department of Physics, Burdwan University, Golapbag, Burdwan 713 104, India

⁺ Nuclear Science Centre, Aruna Asaf Ali Marg, Post Box 10502, New Delhi 110 067, India

 Abstract.

High-spin states of ^{95, 97}Mo (Z=42, N=53,55) nuclei have been investigated through ⁸²Se(¹⁸O, xn) reaction at E_b=60 MeV. The level scheme in ⁹⁵Mo has been observed upto  aprrox. = 10 MeV in the present experiment. The level structure shows mainly single particle character. In ⁹⁷Mo, the ground state level sequence has been extended to 4.5 MeV while the previous information had been up to 2.4 MeV. A negative parity band built on approx. = 1437 keV (11/2^-) excited state has been extended to 5.5 MeV. The structure seems to show a coexistence of single particle and collective modes of excitation. Properties of both the nuclei have been compared with shell model calculations using OXBASH.

Keywords:  Nuclear reactions ⁸²Se(¹⁸O, xn), E=60 MeV; measured E_g , I_g ; g--g coincidence;  ^{95, 97}Mo deduced levels; shell model calculations.

Pacs Nos.  27.60.+j; 23.20.Lv; 21.60.Cs