In this study variations in Ortec and Hamner equipment with different types of detectors were utilized in coincidence circuits to receive the smallest lifetime values of nuclear states. Results from Ge(Li)-NaI(Tl) detectors were compared to results received when NaI(Tl)-NaI(Tl) detectors were combined in a coincidence circuit.Four different isotopes were investigated. Samples of 22Na and 60Co were utilized as prompt sources. The lifetimes of the 0.81 MeV energy level of i33Ba and the 0.124 MeV energy level of 154Eu were studied. These lifetimes have been reported as being 6.3 nsec and 1.18 nsec respectively.The best value received for the 154Eu energy state was a slope measurement of 5.85 ± 3.15 nsec. The smallest value for the 133Ba energy state was a centroid shift measurement of 6.93 nsec.
| Identifer | oai:union.ndltd.org:BSU/oai:cardinalscholar.bsu.edu:handle/179994 |
| Date | January 1970 |
| Creators | Himelick, Max D. |
| Contributors | Craig, Edwin C. |
| Source Sets | Ball State University |
| Detected Language | English |
| Format | ix, 147 leaves : ill. ; 28 cm. |
| Source | Virtual Press |
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