SMuK 2023 – wissenschaftliches Programm

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

HK: Fachverband Physik der Hadronen und Kerne

HK 74: Poster

HK 74.9: Poster

Donnerstag, 23. März 2023, 17:30–19:00, HSZ EG

Lifetime measurement of low-lying states of ¹⁷⁰W — •K.E. Ide¹, V. Werner¹, A. Goasduff^2,3, J. Wiederhold¹, P.R. John¹, D. Bazzacco³, M. Beckers⁴, J. Benito⁵, M. Berger¹, D. Brugnara^2,3, M.L. Cortés³, L.M. Fraile⁵, C. Fransen⁴, A. Gozzelino³, E.T. Gregor³, A. Illana³, J. Jolie⁴, L. Knafla⁴, R. Menegazzo³, D. Mengoni^2,3, C. Müller-Gatermann^4,6, O. Papst¹, G. Pasqualato⁷, C.M. Petrache⁸, N. Pietralla¹, F. Recchia^2,3, D. Testov^2,7, J.J. Valiente-Dobón³, and I. Zanon^2,3,9 — ¹IKP, TU Darmstadt — ²U Padova, Italy — ³INFN, LNL, Italy — ⁴IKP, U Köln — ⁵U Madrid, Spain — ⁶ANL, USA — ⁷INFN, Padova, Italy — ⁸U Paris-Saclay, France — ⁹U Ferrara, Italy

Previous experiments in the region of the Hf and W isotopic chains have shown a change in the first 2⁺ states’ mean lifetimes in comparison to the literature values due to advancements in experimental techniques. A sudden increase of the 2₁⁺ → 0₁⁺ E2 transition strength in the W isotopic chain between N=96 and N=98 is significant and not seen in the neighboring isotopic chains. Therefore, a measurement of the low-lying level lifetimes of ¹⁷⁰W (N=96) with the RDDS method was performed at LNL. The GALILEO array and the GALILEO plunger device were used. Lifetimes for the first 2⁺, 4⁺ and 6⁺ state were obtained and the deduced E2 transition strengths compared to predictions of the CBS model.

*Supported by the BMBF under Verbundprojekt 05P2021 (ErUM-FSP T07) under Grant Nos. 05P21RDFN9, 05P21RDFN1 and 05P21PKFN1.