Energies of the Radiations fromCe144andPr144

Decay scheme of Pr144

“…By photoeleetrie and eonversion eleetron measurements 2~kLBURGER et al [2] observed gamma rays of energies 0.695 ~ 0.01)5, 1.48 A: 0.01 and 2.185 -4-0.015 MeV having relative intensities 1 : 0.4 : 1.1, respectively. Moreover, CORK et al [6] were able to observe in the single spectrum of the 2.185 M~V two gamma peaks of energies 1.7 and 1.1 MeV which were interpreted as single and double annihilation escaped quanta. Moreover, CORK et al [6] were able to observe in the single spectrum of the 2.185 M~V two gamma peaks of energies 1.7 and 1.1 MeV which were interpreted as single and double annihilation escaped quanta.…”

“…KELLER et al [5] and PORTEa et al [4] observed a 60.3 keV internally converted gamma rays whieh they assigned to Nc1144. I-Iowever, COaK et al [6] settled the question by proving that the eonversion line is aetually due to the 59 keu v-ray line in Pr 144. I-Iowever, COaK et al [6] settled the question by proving that the eonversion line is aetually due to the 59 keu v-ray line in Pr 144.…”

“…I-Iowever, COaK et al [6] settled the question by proving that the eonversion line is aetually due to the 59 keu v-ray line in Pr 144. These results were eonfirmed by PORTER et al [4] who used a similar teehnique and by CORK et al [6] and KREGEn et al [7] who employed a seintillation spectrometer. These results were eonfirmed by PORTER et al [4] who used a similar teehnique and by CORK et al [6] and KREGEn et al [7] who employed a seintillation spectrometer.…”