Universität zu Köln

Bradbury, J., Testov, D., Bakes, S., Goasduff, A., Mengoni, D., Valiente-Dobon, J. J., de Angelis, G., Bazzacco, D., Boiano, C., Boso, A., Cederwall, B., Cicerchia, M., Colucci, G., Colovic, P., Didierjean, F., Doncel, M., Duenas, J. A., Galtarossa, F., Gozzelino, A., Hadynska-Klek, K., Jaworski, G., John, P. R., Liu, H., Lenzi, S., Lunardi, S., Menegazzo, R., Mentana, A., Mueller-Gatermann, C., Napoli, D. R., Pasqualato, G., Recchia, F., Rocchini, M., Riccetto, S., Saygi, B., Siciliano, M., Sobolev, Yu and Szilner, S. (2020). Lifetime measurements using a plunger device and the EUCLIDES Si array at the GALILEO gamma-ray spectrometer. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 979. AMSTERDAM: ELSEVIER. ISSN 1872-9576

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Abstract

The GALILEO gamma-ray spectrometer, installed at the Laboratori Nazionali di Legnaro (LNL), benefits from intense stable beams provided by the Tandem-ALPI-PIAVE accelerator complex and from radioactive beams to be delivered in the near future by the SPES facility. The spectrometer is complemented with a variety of ancillary devices to allow for nuclear structure and reaction studies. The 4 pi Si-ball array EUCLIDES coupled to the GALILEO gamma-ray spectrometer represents one of the commonly used setup for experiments aiming at spectroscopic studies. High-efficiency detection of light-charged particles in a fusion-evaporation reaction guarantees good discrimination of different reaction channels and provides essential information for the kinematic reconstruction. In this paper we discuss a configuration of the EUCLIDES array developed for the lifetime measurements of nuclear excited states populated in a fusion-evaporation reaction. In such a configuration a part of the EUCLIDES detectors is disassembled allowing for the installation of a plunger device in the reaction chamber. The reduced configuration of EUCLIDES provides high detection efficiency necessary for reliable light charged-particle discrimination. We report on the commissioning experiment focused on the Ni-58(Ni-58,3p)I-113 reaction. The lifetimes of 11/2(-) and 15/2(-) states were measured by applying the Recoil Distance Doppler Shift method to be equal to 206(20) ps and 7.9(12) ps correspondingly and were in good agreement with the values cited in the literature. Thus, the combination of the GALILEO and EUCLIDES arrays, and the plunger device has resulted in a powerful experimental setup to determine lifetimes of excited states in neutron-deficient nuclei in the picosecond range.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Bradbury, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Testov, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bakes, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Goasduff, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mengoni, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Valiente-Dobon, J. J. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Angelis, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bazzacco, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boiano, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boso, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cederwall, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cicerchia, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Colucci, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Colovic, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Didierjean, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Doncel, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Duenas, J. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Galtarossa, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gozzelino, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hadynska-Klek, K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Jaworski, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED John, P. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lenzi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Lunardi, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Menegazzo, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mentana, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller-Gatermann, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Napoli, D. R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pasqualato, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Recchia, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rocchini, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Riccetto, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Saygi, B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Siciliano, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sobolev, Yu UNSPECIFIED UNSPECIFIED UNSPECIFIED Szilner, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-313926
DOI:	10.1016/j.nima.2020.164345
Journal or Publication Title:	Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip.
Volume:	979
Date:	2020
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1872-9576
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language NEUTRON WALL Multiple languages Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31392