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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Poster Session

HK 27.23: Poster

Mittwoch, 18. März 2026, 16:15–18:30, Redoutensaal

Lifetime determination of first excited 0+ state of 52Cr — •Steffen Meyer¹, Thorsten Kröll¹, Anna-Lena Hartig¹, Martin von Tresckow¹, Ruxandra Borcea², Stefana Calinescu², Adina Coman², Cristian Costache², Irina Dinescu², Razvan Lica², Nicu Marginean², Constantin Mihai², Sorin Pascu², Sebastian Toma², Andrei Turturica², Kalin Gladnishki³, Diana Kocheva³, Georgi Rainovski³, Margarita Efstathiou⁴, and Pavlos Koseoglou⁴ — ¹TU Darmstadt — ²IFIN-HH, Magurele, Romania — ³University of Sofia, Bulgaria — ⁴University of Athens, Greece

For 52Cr a coexistence of a spherical ground and deformed excited 0+ state can be expected. A recent measurement for the the first excited 0+ state determined the E0/E2 branching ratio to the 0+ ground and the first 2+ state. In order to determine the absolute value of the E0 strength the lifetime of the first excited 0+ state is required.

To determine this lifetime a DSAM experiment was performed in 2024 using the ROSPHERE detector array at the tandem accelerator at IFIN-HH in Magurele, Romania. It was noted that the lifetime is outside the sensitivity range of DSAM. To follow up on this experiment a plunger measurement was performed in 2025 with the IFIN-HH plunger device. Now the lifetime will be determined using the RDDS method, which is suitable to determine lifetimes in the suspected range.

The current state of the analysis with preliminary values is presented.

This work is supported by EURO-LABS grant No. 101057511.

Keywords: RDDS; Plunger; Lifetime; ROSPHERE