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Search for a long-lived radioisotope of neodymium

✍ Scribed by V.S. Dubey; V.R. Potnis; C.E. Mandeville; W.B. Keighton

Publisher
Elsevier Science
Year
1957
Tongue
English
Weight
309 KB
Volume
263
Category
Article
ISSN
0016-0032

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✦ Synopsis

Neutron irradiated neodymium has been examined for the possible presence of long-lived activities in the rare earth region of undetermined elemental and isotopic assignment.

No such long period radioelements were detectable. Scintillation counting methods and ion exchange columns were employed to show that a composite contribution from three isotopes of europium may have been misinterpreted as evidence for the presence of a 1.7-yr. activity of neodymium.

These elements are formed by neutron capture in europium and samarium present as impurities in neodymium.

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Dissociative electron attachment to alkyl halides is employed to search for stable hydrogen halide anions. Anions previously ascribed to HCIfrom 2-chloropropane are here shown to be C; on the basis of accurate mass determinations. Long-lived HIions are observed from iodomethane, but HBr-is not detec