E. Uusikylä, P. Ruotsalainen, T. Grahn, C. Müller-Gatermann, C. Fransen, S. Thiel, M. Beckers, A. Illana, C. Lakenbrink, D. Lazzaretto, J. Sarén, K. Auranen, V. Bogdanoff, A. Briscoe, L. Canete, J. Chadderton, P. Greenlees, J. Heery, A. Javanainen, J. Jolie, H. Joukainen, R. Julin, H. Jutila, H. Kokkonen, J. Louko, M. Luoma, A. M. Plaza, B. S. N. Singh, J. Ojala, J. Pakarinen, P. Rahkila, J. Romero, S. Suman, J. Tuunanen, J. Uusitalo, F. V. Spee, G. Zimba, W. Korten
2026.2.1EUROPEAN PHYSICAL JOURNAL A
Abstract
Abstract The Advanced Plunger-Particle detector Array ( APPA ) is a new plunger device constructed to measure lifetimes of excited states in exotic nuclei, particularly those near the N = Z line. This instrument combines a compact plunger device with a charged-particle detector array to increase the experimental sensitivity for low-cross-section lifetime measurements employing fusion-evaporation reactions. APPA can be used in conjunction with the JUROGAM 3 germanium-detector array and with the RITU or MARA recoil separators available at the Accelerator Laboratory of the University of Jyväskylä (JYFL-ACCLAB). This article outlines the technical details of APPA , presents the lifetime measurement of the $$2^+_1$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mn>2</mml:mn> <mml:mn>1</mml:mn> <mml:mo>+</mml:mo> </mml:msubsup> </mml:math> state in 62 Zn, and reports the effect of APPA on the transmission efficiency of MARA and prompt $$\gamma $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>γ</mml:mi> </mml:math> -ray and JYUTube detection efficiencies.
Citation format
UUSIKYLÄ, E., et al. The advanced plunger-particle detector array - APPA. EUROPEAN PHYSICAL JOURNAL A, 2026, 62(2).