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No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; 
; CODEN VDPEAZ; v. 38(3); p. 43
; CODEN VDPEAZ; v. 38(3); p. 43
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 40(4); p. 77
; CODEN VDPEAZ; v. 40(4); p. 77
[en] As a consequence of the recent establishment of a deep third minimum in the potential energy surface of actinide isotopes the existence of short-lived fission isomers in light actinides is predicted. A search was started in 234U using a geometrical projection method and nuclear track detectors. Excitation functions were measured, based on the known 3.8 ns fission isomer in 240Pu as reference. Preliminary results indicate the existence of a new isomer in 234U (t1/2 ∼ 87(17) ps), however a confirmation with an optimized target technology is in progress
Journal
[en] Investigating shape isomers in odd-A actinide nuclei probes the nuclear single-particle structure of heavy nuclei at large deformations, thus allowing to refine nuclear models. Besides γ-spectroscopic studies, conversion electron spectroscopy is an indispensable tool to complement the experimental spectroscopic information. Fission isomers in 239Pu were populated via the 238U(α, 3n) reaction (Eα= 33 MeV) at the Garching Tandem accelerator. A recoil shadow technique was used to selectively detect only fission fragments from shape isomeric decays at backward angles. For the detection of conversion electrons three Mini-Orange spectrometers (i.e. magnetic transport and filter systems with a toroidal magnetic field from permanent magnet wedges in conjuction with lN2-cooled Si(Li) detectors) were used at forward angles. Due to the long lifetime of 8 μs of the fission isomer in 239Pu an annular catcher foil was placed behind the target to stop the recoiling isomers prior to their isomeric fission decay. In order to optimize the solid angle coverage for delayed fission fragment detection, a large array of silicon solar cells (15 modules, each 4x2 cm2) was used at backward angles. Delayed fission fragments were detected in coincidence with electrons detected in the Si(Li) detectors of the Mini-Orange spectrometers.
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; (Bochum 2009 issue); [1 p.]
; CODEN VDPEAZ; (Bochum 2009 issue); [1 p.]
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 38(3); p. 34
; CODEN VDPEAZ; v. 38(3); p. 34
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 37(4); p. 89
; CODEN VDPEAZ; v. 37(4); p. 89
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 38(2); p. 27-28
; CODEN VDPEAZ; v. 38(2); p. 27-28
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 37(4); p. 98
; CODEN VDPEAZ; v. 37(4); p. 98
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 37(4); p. 89
; CODEN VDPEAZ; v. 37(4); p. 89
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; ; CODEN VDPEAZ; v. 41(3); [1 p.]
; CODEN VDPEAZ; v. 41(3); [1 p.]
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