In search of low energy nuclear structure of ⁶⁹Ge by means of fusion-evaporation reaction

A fusion-evaporation reaction was performed with beam of ²⁸Si as the projectile at energy 100 MeV obtained from 15-UD pelletron accelerator at Inter University Accelerator Center (IUAC), New Delhi. The beam was bombarded onto ⁴⁸Ti target of thickness 1 mg/cm² backed by 8 mg/cm^{2 197}Au . The emitted gamma rays were detected in coincidence mode with the help of 16 HpGe clover detectors of the Indian national Gamma Array (INGA). We are using CANDLE, RADWARE, INGASORT software for data analysis. Some strongly populated gamma ray peaks of ⁶⁹Ge are identified like 398 KeV, 875 keV, 953 keV, 1348 keV etc. Also we have measured the population cross-section of all the strongly populated nuclei like ⁷²Se, ⁷²As, ⁷⁰As, ⁶⁹Ge, ⁶⁶Ga etc. in the above mentioned fusion evaporation by measuring the area under the ground state peaks of all these nuclei and compared with the theoretical PACE4 calculation. The detailed results will be reported in the symposium. (author)