Combining {\gamma}-ray and particle spectroscopy with SONIC@HORUS

The particle spectrometer SONIC for particle-\(\gamma\) coincidence measurements was commissioned at the Institute for Nuclear Physics in Cologne, Germany. SONIC consists of up to 12 silicon \(\mathit{\Delta}E\)-\(E\) telescopes with a total solid angle coverage of 9%, and will complement HORUS, a \(\gamma\)-ray spectrometer with 14 HPGe detectors. The combined setup SONIC@HORUS is used to investigate the \(\gamma\)-decay behaviour of low-spin states up to the neutron separation threshold excited by light-ion inelastic scattering and transfer reactions using beams provided by a 10 MV FN Tandem accelerator. The particle-\(\gamma\) coincidence method will be presented using data from a \(^{92}\)Mo(p,p'\(\gamma\)) experiment. In a \(^{119}\)Sn(d,X) experiment, excellent particle identification has been achieved because of the good energy resolution of the silicon detectors of approximately 20 keV. Due to the non-negligible momentum transfer in the reaction, a Doppler correction of the detected \(\gamma\)-ray energy has to be performed, using the additional information from measuring the ejectile energy and direction. The high sensitivity of the setup is demonstrated by the results from a \(^{94}\)Mo(p,p'\(\gamma\)) experiment, where small \(\gamma\)-decay branching ratios have been deduced.