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Superdeformed states in A90 nuclei
KTH, Superseded Departments, Physics.ORCID iD: 0000-0003-1996-0805
1999 (English)Licentiate thesis, comprehensive summary (Other scientific)
Place, publisher, year, edition, pages
Stockholm: KTH , 1999. , viii, 46 p.
Series
Trita-FYS, ISSN 0280-316X ; 9044
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-1013OAI: oai:DiVA.org:kth-1013DiVA: diva2:6785
Presentation
(English)
Note
QC 20100521Available from: 2000-09-26 Created: 2000-09-26 Last updated: 2010-05-21Bibliographically approved
List of papers
1. Observation of superdeformed states in Mo-88
Open this publication in new window or tab >>Observation of superdeformed states in Mo-88
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1999 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 6, no 4, 391-397 p.Article in journal (Refereed) Published
Abstract [en]

High-spin states in Mo-88 were studied using the GAMMASPHERE germanium detector array in conjunction with the MICROBALL CsI(TI) charged-particle detector system. Three gamma-ray cascades with dynamic moments of inertia showing similar characteristics to superdeformed rotational bands observed in the neighbouring A = 80 region have been identified and assigned to the nucleus Mo-88. The quadrupole moment of the strongest band, deduced by the Residual Doppler Shift Method, corresponds to a quadrupole deformation of beta(2) approximate to 0.6. This confirms the superdeformed nature of this band. The experimental data are interpreted in the framework of total routhian surface calculations. All three hands are assigned to two-quasi-particle proton configurations at superdeformed shape.

Place, publisher, year, edition, pages
New York: SPRINGER VERLAG, 1999
Keyword
QUADRUPOLE-MOMENT MEASUREMENT, DEFORMED INTRUDER BANDS, MASS REGION, TRANSITIONS, NUCLEI
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-12984 (URN)000084668500007 ()
Note

QC 20100520

Available from: 2010-05-21 Created: 2010-05-21 Last updated: 2017-12-12Bibliographically approved
2. Favoured superdeformed states in 89TC
Open this publication in new window or tab >>Favoured superdeformed states in 89TC
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1999 (English)In: European Physical Journal A, ISSN 1434-6001, E-ISSN 1434-601X, Vol. 6, no 3, 251-255 p.Article in journal (Refereed) Published
Abstract [en]

A superdeformed band consisting of a cascade of ten gamma-ray transitions has been identified and assigned to the nucleus Tc-89, close to the proton dripline. The quadrupole moment of the band (Q(t) = 6.7(-2.3)(+3.0) eb, as measured by the Residual Doppler Shift Method) as well as a large dynamic moment of inertia point to a highly elongated shape. With a relative population of approximately 15% of the gamma-ray flux in the Tc-89 exit channel, thp band is among the most intense superdeformed bands observed to date.

Place, publisher, year, edition, pages
New York: Springer-Verlag New York, 1999
Keyword
MASS REGION, BAND, TRANSITIONS, NUCLEI
National Category
Physical Sciences
Identifiers
urn:nbn:se:kth:diva-12985 (URN)000083880100005 ()
Note

QC 20100521

Available from: 2010-05-21 Created: 2010-05-21 Last updated: 2017-12-12Bibliographically approved

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Bäck, Torbjörn

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