Universität zu Köln

Prill, Sarah ORCID: 0000-0002-1509-7744, Bohn, Anna, Everwyn, Vera, Haefner, Guillaume, Heim, Felix, Spieker, Mark, Weinert, Michael, Wilhelmy, Julius and Zilges, Andreas ORCID: 0000-0002-9328-799X (2022). Lifetime analysis of Te-128,Te-130 via the Doppler-shift attenuation method. Phys. Rev. C, 105 (3). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9993

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Abstract

Background: The Z=52 nuclei Te-128 and Te-130 are interesting candidates to study nuclear-structure properties close to the Z=50 shell. The knowledge of lifetimes of low-lying states in those nuclei is still scarce. Purpose: The goal of the present work is to extend the experimental database of nuclear level lifetimes of low-spin states in Te-128 and Te-130. Methods: Nuclear level lifetimes were determined by means of the Doppler-shift attenuation method (DSAM) using p-gamma coincidences measured at the SONIC@HORUS setup located at the FN-Tandem ion accelerator of the University of Cologne. Results: For Te-128, lifetimes of eleven excited states could be determined, one of these for the first time. For the case of Te-130, 18 nuclear level lifetimes were obtained, 15 for the first time. In both experiments, upper limits for lifetimes of several additional levels were determined. Moreover, the nuclear level scheme of Te-130 could be extended. One additional level and 13 new transitions for levels above 2.7 MeV have been added. A standard shell-model calculation was performed and compared with the experimental results, showing an overall agreement. Conclusions: DSAM using p-gamma coincidences is a powerful tool to determine lifetimes in the subpicosecond range free of feeding contributions. Although both experiments yielded low statistics, numerous lifetimes could be obtained. The use of p-gamma coincidences furthermore enables the extension of level schemes.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Prill, Sarah UNSPECIFIED orcid.org/0000-0002-1509-7744 UNSPECIFIED Bohn, Anna UNSPECIFIED UNSPECIFIED UNSPECIFIED Everwyn, Vera UNSPECIFIED UNSPECIFIED UNSPECIFIED Haefner, Guillaume UNSPECIFIED UNSPECIFIED UNSPECIFIED Heim, Felix UNSPECIFIED UNSPECIFIED UNSPECIFIED Spieker, Mark UNSPECIFIED UNSPECIFIED UNSPECIFIED Weinert, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Wilhelmy, Julius UNSPECIFIED UNSPECIFIED UNSPECIFIED Zilges, Andreas UNSPECIFIED orcid.org/0000-0002-9328-799X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-684084
DOI:	10.1103/PhysRevC.105.034319
Journal or Publication Title:	Phys. Rev. C
Volume:	105
Number:	3
Date:	2022
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9993
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NUCLEAR-DATA SHEETS; GAMMA-RAY; PROGRAM; STATES Multiple languages Physics, Nuclear Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68408