摘要
High spin level structure of ^(95)Tc was reinvestigated via the ^(90)Zr(^(12)C,αp2n)^(95)Tc fusion-evaporation reaction using the incident beam energy of 78 MeV ^(12)C provided by the SFC of the Institute of Modern Physics(IMP),Chinese Academy of Sciences(CAS).The target was 1.82 mg/cm^(2) ^(90)Zr on 8.23 mg/cm^(2) natural lead backing.The emittedγrays from the reaction products were detected by an multidetector array consisting of 15 HPGe detectors of which 8 HPGe detectors have Anti-Compton shieds,7 Clover detectors placed in a plane perpendicular to the beam and 3 LaBr3 detectors at 30◦against the beam.The energy and efficiency calibrations were made using ^(60)Co,^(133)Ba,and ^(152)Eu standard sources and the typical energy resolution is 2.0 to 2.5 keV at full width at half-maximum(FWHM)for a 1332.5 keV γ ray of ^(60)Co.Events have been collected when at least two detectors are fired within the prompt coincidence time window of 100 ns.Under these conditions,a total of 3.5×10^(6) coincidence events were recorded and the data were sorted into a symmetrized Eγ-Eγ matrix for subsequent off-line analysis.
