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The Gamma-Ray Distribution From Oriented Cerium-141
The distribution of gamma-radiation emitted in the decay of Ce(141) nuclei alined in neodymium ethylsulfate single crystals has been remeasured for temperatures as low as 0.0162 °K and has been found to be considerably more anisotropic than previously thought. The discrepancy is explained on the bas...
| Autores principales: | , , |
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| Formato: | Online Artículo Texto |
| Lenguaje: | English |
| Publicado: |
[Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
1962
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5312814/ http://dx.doi.org/10.6028/jres.066A.031 |
| Sumario: | The distribution of gamma-radiation emitted in the decay of Ce(141) nuclei alined in neodymium ethylsulfate single crystals has been remeasured for temperatures as low as 0.0162 °K and has been found to be considerably more anisotropic than previously thought. The discrepancy is explained on the basis of preferential scattering of the plane-polarized radiation in the Dewar system. Similar measurements with Ce(141) nuclei oriented in a polarized cerium ethylsulfate crystal have been made. The hyperfine constant for Ce(141) in the neodymium ethylsulfate lattice is deduced as A =0.0305±0.003 cm(−1), and the E2/M1 ratio for the 145-kev gamma ray in Pr(141) is +0.068 ±0.008. |
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