STUDY OF NEUTRINO-RECOIL PRODUCED POINT-DEFECTS IN INSB BY SN-119 MOSSBAUER-SPECTROSCOPY

We have utilized the electron-capture decay of Te-119g to Sb-119 to pr oduce isolated single Frenkel pairs in InSb. This effect is caused by the neutrino emission in the decay process which imparts a monoenerget ic recoil of 12 eV to the Sb-119 atoms, thereby displacing about 20% o f them to interstitial sites. Two distinct interstitial components can be observed. The process is traced by Mossbauer emission spectroscopy following the decay of Sb-119 to Sn-119. The displacement threshold E (d) is confined to 6 eV < Ed <12 eV from auxiliary experiments employi ng Te-119m isotopes.