Dresden 2013 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 56: Poster - Struktur und Dynamik von Kernen

HK 56.4: Poster

Mittwoch, 6. März 2013, 16:45–19:00, HSZ 4.OG

Neutron-capture experiment on ⁷⁸Se with EXOGAM at ILL Grenoble — •Robert John¹, Ralph Massarczyk¹, Ronald Schwengner¹, Aurelien Blanc², Michael Jentschel², Ulli Köster², Paolo Mutti², Waldemar Urban², Tamas Belgya³, and Stanislav Valenta⁴ — ¹Helmholtz Zentrum Dresden Rossendorf — ²ILL Grenoble — ³IKI Budapest — ⁴Charles University Prague

We present first results of a neutron-capture study of ⁷⁸Se. The experiment was carried out with cold neutrons at the reactor of the Institut Laue-Langevin (ILL) at Grenoble. Gamma rays following the ⁷⁷Se(n,γ) reaction were measured with eight EXOGAM clover detectors, one clover detector taken from the Lohengrin setup and six GASP detectors. This setup enabled the measurement of two- and three-fold γ-ray coincidences as well as of angular correlations of the γ rays with high efficiency. The aim of the analysis is to gain detailed information about the deexcitation patterns of the capture state and lower-lying excited states. These may be used as a test for statistical simulations of γ-ray cascades and their inputs, such as γ-ray strength functions and level densities. This work was supported by the BMBF Joint Research Project TRAKULA.