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Statistical properties of Pu-243, and Pu-242(n,gamma) cross section calculation

机译:PU-243的统计特性,以及PU-242(N,GAMMA)横截面计算

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The level density and gamma-ray strength function (gamma SF) of Pu-243 have been measured in the quasicontinuum using the Oslo method. Excited states in Pu-243 were populated using the Pu-242(d, p) reaction. The level density closely follows the constant-temperature level density formula for excitation energies above the pairing gap. The gamma SF displays a double-humped resonance at low energy as also seen in previous investigations of actinide isotopes. The structure is interpreted as the scissors resonance and has a centroid of omega(SR) = 2.42(5) MeV and a total strength of B-SR = 10.1(15) mu(2)(N), which is in excellent agreement with sum-rule estimates. The measured level density and. SF were used to calculate the Pu-242(n,gamma) cross section in a neutron energy range for which there were previously no measured data.
机译:使用奥斯陆方法在QuasInontinuum中测量PU-243的水平密度和γ射线强度功能(Gamma Sf)。 使用PU-242(D,P)反应填充PU-243中的激发态。 水平密度紧密遵循用于在配对间隙上方的恒温水平密度公式的激发能量。 γSF在低能量下显示出双驼峰共振,也可以在先前调查的神奇同位素的研究中看到。 该结构被解释为剪刀共振,并具有ω(SR)= 2.42(5)MeV的质心和B-SR = 10.1(15)亩(2)(n)的总强度,这与良好的协议 总和规则估计。 测量的水平密度和。 SF用于计算中子能量范围内的PU-242(n,γ)横截面以前没有测量数据。

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