Low-lying levels in 120Sb studied with the 120Sn(p,nγ) reaction

Properties of the levels in ¹²⁰Sb have been studied with the reaction ¹²⁰Sn(p, nγ). The low-lying level scheme of ¹²⁰Sb below 450 keV was constructed from the γ-ray excitation functions and γ-γ coincidences. The spins and parities were assigned from comparisons of the measured angular distributions and linear polarizations of the deexciting γ-rays as well as the absolute excitation functions of the residual levels with the predictions of the statistical compound nucleus model. In addition, the half-life of an isomeric state at 78.15 keV was measured. The results are 8.37 keV, 2^?; 78.15 keV, 3⁺; $\text{T}{}_{\mathrm{<mtext>1</mtext><mtext>2</mtext>}}\text{= 241±3}\text{ns}$; 149.29 keV, 3⁺; 166.05 keV, 3^?; 192.64 keV, 2⁺; 233.06 keV, 2⁺; 243.80 keV, 4; 260.29 keV, 3^?; 261.68 keV, 4; 334.07 keV, 4; 341.14 keV, 5; 343.21 keV, 4; 390.31 keV, 2 or 3⁺; 437.68 keV, 1 or 2 and 447.68 keV, 1⁽⁺⁾.