Conversion electron spectroscopy in the superdeformed minimum of 240Pu

被引：23

作者：

Gassmann, D

Thirolf, PG ^{[1
]}

Mergel, E

Habs, D

Chromik, M

Domscheit, J

Görgen, A

Hauschild, K

Hübel, H

Hunyadi, M

Krasznahorkay, A

Lopez-Martens, A

Neumann, S

Neusser, A

Pansegrau, D

Reiter, P

Scheit, H

Schönwasser, G

Schwalm, D

机构：

[1] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[2] Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[3] Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary

[4] Max Planck Inst Kernphys, D-69029 Heidelberg, Germany

[5] CEA Saclay, SPhN, DAPNIA, F-91191 Gif Sur Yvette, France

[6] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France

来源：

PHYSICS LETTERS B | 2001年 / 497卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(00)01353-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Conversion electrons from electromagnetic transitions preceding the fission of the 3.7 ns Pu-240f shape isomer have been measured. The electron spectrum shows a broad structure of individually resolved lines with energies between 620 and 650 keV, which are interpreted as the (J(beta) --> J(g)) E0 transitions from the decay of the lowest beta -vibrational band with a phonon energy of 770 keV feeding to the ground state band of Pu-240f. In a combined analysis of e(-) and high resolution gamma -ray spectroscopy data previously established octupole bands could also be studied in more detail. (C) 2001 Published by Elsevier Science B.V.

引用

页码：181 / 189

页数：9

共 22 条

[1] Ultrahigh resolution study of collective modes in 158Gd [J].

Börner, HG ;

Jentschel, M ;

Zamfir, NV ;

Casten, RF ;

Krticka, M ;

Andrejtscheff, W .

PHYSICAL REVIEW C, 1999, 59 (05) :2432-2439

[2] NEW INTERPRETATION OF THE LOWEST K=0 COLLECTIVE EXCITATION OF DEFORMED-NUCLEI AS A PHONON EXCITATION OF THE GAMMA-BAND - REPLY [J].

CASTEN, RF ;

VONBRENTANO, P .

PHYSICAL REVIEW C, 1995, 51 (06) :3528-3531

[3] ELECTRICAL MONOPOLE TRANSITIONS IN NON-SPHERICAL NUCLEI [J].

DAVYDOV, AS ;

ROSTOVSK.VS .

NUCLEAR PHYSICS, 1964, 60 (04) :529-&

[4]

DITZEL E, 1996, NUCL INSTRUM METH A, V176, P428

[5] LOWEST BETA-VIBRATIONAL PHONON IN THE 2ND MINIMA OF U-236,238 [J].

GOERLACH, U ;

HABS, D ;

METAG, V ;

SCHWARTZ, B ;

SPECHT, HJ ;

BACKE, H .

PHYSICAL REVIEW LETTERS, 1982, 48 (17) :1160-1163

[6] On the two first excited K=0 bands in U-238 and Pu-240 [J].

Hoogduin, JM ;

Ditzel, E ;

Balanda, A ;

deBoer, FWN ;

Bokemeyer, H ;

Gerl, J ;

Heyde, F ;

vanKlinken, J ;

Krasznahorkay, A ;

Salabura, P ;

Wollersheim, HJ .

PHYSICS LETTERS B, 1996, 384 (1-4) :43-49

[7]

HUNYADI M, UNPUB

[8]

JUST M, 1979, THESIS U HEIDELBERG

[9]

JUST M, 1980, P INT S PHYS CHEM FI, V1, P71

[10] DYNAMICS OF FISSION - ROLE OF REFLECTION ASYMMETRY IN NUCLEAR SHAPE [J].

LEDERGERBER, T ;

PAULI, HC .

NUCLEAR PHYSICS A, 1973, A207 (01) :1-32

← 1 2 3 →