First observation of /sup 162/Hf decay: completion of an alpha -decay chain

The new isotope /sup 162/Hf (T/sub 1/2/=(37.6+or-0.8)s) is produced in a /sup 142/Nd (/sup 24/Mg,4n) reaction. The activities produced in this reaction are transported to a measuring station by use of a He- jet system. Decay properties are observed with alpha -, gamma -, and gamma - gamma -spectrosc...

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Detalles Bibliográficos
Autores principales: Schrewe, U J, Clifford, E T H, Hagberg, E, Hardy, J C, Koslowsky, V T, Schmeing, H, Sharma, K S
Lenguaje:eng
Publicado: CERN 1981
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.5170/CERN-1981-009.178
http://cds.cern.ch/record/878133
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author Schrewe, U J
Clifford, E T H
Hagberg, E
Hardy, J C
Koslowsky, V T
Schmeing, H
Sharma, K S
author_facet Schrewe, U J
Clifford, E T H
Hagberg, E
Hardy, J C
Koslowsky, V T
Schmeing, H
Sharma, K S
author_sort Schrewe, U J
collection CERN
description The new isotope /sup 162/Hf (T/sub 1/2/=(37.6+or-0.8)s) is produced in a /sup 142/Nd (/sup 24/Mg,4n) reaction. The activities produced in this reaction are transported to a measuring station by use of a He- jet system. Decay properties are observed with alpha -, gamma -, and gamma - gamma -spectroscopy. The Z-assignment of the new isotope is based on a cross bombardment on /sup 141/Pr target and on the results of a gamma -X-ray coincidence measurement. The mass assignment is deduced from the excitation function measurements. From the measured alpha -decay energy E/sub alpha /=4308 (10) keV new mass values are derived for /sup 162/Hf, /sup 166/W, /sup 170/Os, /sup 174/Pt, and /sup 178/Hg. These new mass values make it possible to establish systematics of two-proton and one-proton binding energies far from stability. (20 refs).
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1981
publisher CERN
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spelling cern-8781332019-09-30T06:29:59Zdoi:10.5170/CERN-1981-009.178http://cds.cern.ch/record/878133engSchrewe, U JClifford, E T HHagberg, EHardy, J CKoslowsky, V TSchmeing, HSharma, K SFirst observation of /sup 162/Hf decay: completion of an alpha -decay chainNuclear PhysicsThe new isotope /sup 162/Hf (T/sub 1/2/=(37.6+or-0.8)s) is produced in a /sup 142/Nd (/sup 24/Mg,4n) reaction. The activities produced in this reaction are transported to a measuring station by use of a He- jet system. Decay properties are observed with alpha -, gamma -, and gamma - gamma -spectroscopy. The Z-assignment of the new isotope is based on a cross bombardment on /sup 141/Pr target and on the results of a gamma -X-ray coincidence measurement. The mass assignment is deduced from the excitation function measurements. From the measured alpha -decay energy E/sub alpha /=4308 (10) keV new mass values are derived for /sup 162/Hf, /sup 166/W, /sup 170/Os, /sup 174/Pt, and /sup 178/Hg. These new mass values make it possible to establish systematics of two-proton and one-proton binding energies far from stability. (20 refs).CERNoai:cds.cern.ch:8781331981
spellingShingle Nuclear Physics
Schrewe, U J
Clifford, E T H
Hagberg, E
Hardy, J C
Koslowsky, V T
Schmeing, H
Sharma, K S
First observation of /sup 162/Hf decay: completion of an alpha -decay chain
title First observation of /sup 162/Hf decay: completion of an alpha -decay chain
title_full First observation of /sup 162/Hf decay: completion of an alpha -decay chain
title_fullStr First observation of /sup 162/Hf decay: completion of an alpha -decay chain
title_full_unstemmed First observation of /sup 162/Hf decay: completion of an alpha -decay chain
title_short First observation of /sup 162/Hf decay: completion of an alpha -decay chain
title_sort first observation of /sup 162/hf decay: completion of an alpha -decay chain
topic Nuclear Physics
url https://dx.doi.org/10.5170/CERN-1981-009.178
http://cds.cern.ch/record/878133
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