Eur. Phys. J. A (2017) 53: 162
https://doi.org/10.1140/epja/i2017-12353-y

Special Article - Tools for Experiment and Theory

Prompt-delayed -ray spectroscopy with AGATA, EXOGAM and VAMOS++

¹ GANIL, CEA/DRF-CNRS/IN2P3, Bd Henri Becquerel, BP 55027, F-14076, Caen Cedex 5, France
² Department of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, 400005, Mumbai, India
³ Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Saclay, F-91406, Orsay Cedex, France
⁴ Variable Energy Cyclotron Centre, 1/AF Bidhan Nagar, 700064, Kolkata, India
⁵ Institute of Nuclear Physics PAN, 31-342, Kraków, Poland
⁶ Nuclear Science Division, Lawrence Berkeley National Laboratory, 94720, Berkeley, CA, USA
⁷ CSNSM, Université Paris-Saclay, CNRS/IN2P3, F-91405, Orsay, France
⁸ IFIC, Universitat de València, CSIC, E-46071, València, Spain

^* e-mail: yunghee.kim@ganil.fr

Received: 19 May 2017
Accepted: 19 July 2017
Published online: 10 August 2017

Abstract

A new experimental setup to measure prompt-delayed -ray coincidences from isotopically identified fission fragments, over a wide time range of 100ns-200μ s, is presented. The fission fragments were isotopically identified, on an event-by-event basis, using the VAMOS++ large acceptance spectrometer. The prompt rays emitted at the target position and corresponding delayed rays emitted at the focal plane of the spectrometer were detected using, respectively, thirty two crystals of the AGATA -ray tracking array and seven EXOGAM HPGe Clover detectors. Fission fragments produced in fusion and transfer-induced fission reactions, using a ²³⁸U beam at an energy of 6.2 MeV/u impinging on a ⁹Be target, were used to characterize and qualify the performance of the detection system.