Pk. Joshi et al., PICOSECOND LIFETIME MEASUREMENT SYSTEMS FOR LEVELS POPULATED BY ELECTRON-CAPTURE AND FOR LEVELS DECAYING BY E0 TRANSITIONS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 335(3), 1993, pp. 461-469
Two new systems, to measure lifetimes of nuclear levels in the picosec
ond range that decay by E0 transitions, have been developed at the UNI
SOR on-line isotope separator facility. These systems make use, for th
e first time, of fast coincidences involving characteristic X-rays. Th
e first of the two systems involves specifically the X-rays originatin
g from the internal conversion process, while the second involves X-ra
ys resulting from both the internal conversion and electron capture pr
ocesses.