First detection and energy measurement of recoil ions following beta decay in a Penning trap with the WITCH experiment

M. Beck; S. Coeck; V.Yu. Kozlov; M. Breitenfeldt; P. Delahaye; P. Friedag; F. Glück; M. Herbane; A. Herlert; I.S. Kraev; J. Mader; M. Tandecki; S. Van Gorp; F. Wauters; Ch. Weinheimer; F. Wenander; N. Severijns

doi:10.1140/epja/i2011-11045-0

2022 Impact factor 2.7

Hadrons and Nuclei

Eur. Phys. J. A (2011) 47: 45
https://doi.org/10.1140/epja/i2011-11045-0

Regular Article - Experimental Physics

First detection and energy measurement of recoil ions following beta decay in a Penning trap with the WITCH experiment

M. Beck¹^*, S. Coeck², V.Yu. Kozlov², M. Breitenfeldt², P. Delahaye³, P. Friedag¹, F. Glück³^,4, M. Herbane², A. Herlert⁵, I.S. Kraev², J. Mader¹, M. Tandecki², S. Van Gorp², F. Wauters², Ch. Weinheimer¹, F. Wenander⁵, N. Severijns² and the ISOLDE Collaboration

¹ Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm Str. 9, D-48149, Münster, Germany
² Instituut voor Kern- en Stralingsfysica, K.U. Leuven, Celestijnenlaan 200 D, B-3001, Leuven, Belgium
³ Institut für Experimentelle Kernphysik, KIT, D-76131, Karlsruhe, Germany
⁴ KFKI, RMKI, PO Box 49, H-1525, Budapest, Hungary
⁵ Physics Department, CERN, 1211, Geneva 23, Switzerland

^* e-mail: marcusb@uni-muenster.de

Received: 30 July 2010
Accepted: 16 February 2011
Published online: 24 March 2011

Abstract

The WITCH experiment (Weak Interaction Trap for CHarged particles) will search for exotic interactions by investigating the - angular correlation via the measurement of the recoil energy spectrum after -decay. As a first step the recoil ions from the -decay of ¹²⁴In stored in a Penning trap have been detected. The evidence for the detection of recoil ions is shown and the properties of the ion cloud that forms the radioactive source for the experiment in the Penning trap are presented.