SMuK 2023 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HK: Fachverband Physik der Hadronen und Kerne

HK 59: Structure and Dynamics of Nuclei XI

HK 59.4: Vortrag

Donnerstag, 23. März 2023, 15:00–15:15, SCH/A118

Lifetime measurements of excited states of ¹³²Te after 2n transfer — •H. Mayr¹, T. Stetz¹, V. Werner¹, T. Beck⁵, M. Beckers², A. Blazhev², R. Borcea⁴, S. Calinescu⁴, C. Costache⁴, I. Dinescu⁴, A. Esmaylzadeh², B. Falk², J. Fischer², R.-B. Gerst², K. Gladnishki³, A. Ionescu⁴, V. Karayonchev⁶, E. Kleis², H. Kleis², L. Klöckner², P. Koch², D. Kocheva³, P. Koseoglou¹, R. Mayer¹, R.-E. Mihai⁴, C. M. Nickel¹, C.-R. Nita⁴, A. Pfeil², N. Pietralla¹, G. Rainovski³, F. Spee², L. Stan⁴, M. Stoyanova³, S. Toma⁷, and R. Zidarova¹ — ¹TU Darmstadt — ²U Cologne — ³U Sofia — ⁴IFIN-HH Bucharest — ⁵MSU — ⁶TRIUMF Canada — ⁷UP Bucharest

The proton-neutron symmetry of low-lying nuclear states is characterized by the mixing of respective configurations to their wave functions, dominated by few two-nucleon configurations near shell closures. Located closely to the doubly-magic ¹³²Sn, ¹³²Te is therefore well suited to study mixed-symmetric configurations and their fragmentation. By applying the Doppler Shift Attenuation Method, following a two-neutron transfer reaction to ¹³²Te, the location and fragmentation of mixed-symmetric states has been studied through the measurement of excited-state lifetimes. Results for the 2⁺ mixed-symmetric states will be presented. A complementary experiment has been performed using the Recoil Distance Doppler Shift method, in order to access lifetimes of longer-lived states. With the resulting lifetimes, transition strengths to lower lying states have been determined and compared to theoretical approaches. *Supported by the BMBF 05P21RDCI2-TP1.