Speaker
Description
The LArge-scale Modular BGO Detection Array (LAMBDA), as its current prototype, consists of 49 modules of BGO crystals with the size of 60 × 60 × 120 mm3. It both has excellent full-energy peak efficiency and acceptable energy resolution for gamma-ray under several MeV. It could work for multiple nuclear physical experiments by using the total absorption gamma-ray spectroscopy. We carry it to perform the first β-Oslo experiment in China to measure the reaction rate of Fe59(n,g). The 60Mn beam is produced by the Lanzhou Radioactive Beam Line and delivered to center of detector and beta-decay to Fe60. The LAMBDA detects the matrix of individual gamma energy VS the excitation energy, then the nuclear level density and gamma strength function of the compound Fe60 can be extracted. By implementing these two quantities, the reaction rate can be obtained by Hauser-Feshbach model. I will introduce the characteristic of LAMBDA, some features in the data analysis and preliminary experimental results of Fe59(n,g).
