A1 Journal article (refereed)
A charge plunger device to measure the lifetimes of excited nuclear states where transitions are dominated by internal conversion (2020)


Barber, L.; Heery, J.; Cullen, D.M.; Singh, B.S. Nara; Herzberg, R.D.; Müller-Gatermann, C.; Beeton, G.; Bowry, M.; Dewald, A.; Grahn, T.; Greenlees, P.T.; Illana, A.; Julin, R.; Juutinen, S. et al. (2020). A charge plunger device to measure the lifetimes of excited nuclear states where transitions are dominated by internal conversion. Nuclear Instruments and Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment, 979, 164454. DOI: 10.1016/j.nima.2020.164454


JYU authors or editors


Publication details

All authors or editors: Barber, L.; Heery, J.; Cullen, D.M.; Singh, B.S. Nara; Herzberg, R.D.; Müller-Gatermann, C.; Beeton, G.; Bowry, M.; Dewald, A.; Grahn, T.; et al.

Journal or series: Nuclear Instruments and Methods in Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment

ISSN: 0168-9002

eISSN: 1872-9576

Publication year: 2020

Volume: 979

Article number: 164454

Publisher: Elsevier BV

Publication country: Netherlands

Publication language: English

DOI: http://doi.org/10.1016/j.nima.2020.164454

Open Access: Open access publication published in a hybrid channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/71400


Abstract

A charge plunger device has been commissioned based on the DPUNS plunger (Taylor et al., 2013) using the in-flight mass separator MARA at the University of Jyväskylä. The 152Sm(32S,4n)180Pt reaction was used to populate excited states in 180Pt. A lifetime measurement of the 21+ state was performed by applying the charge plunger technique, which relies on the detection of the charge state-distribution of recoils rather than the detection of the emitted γ rays. This state was a good candidate to test the charge plunger technique as it has a known lifetime and depopulates through a converted transition that competes strongly with γ-ray emission. The lifetime of the 21+ state was measured to be 480(10)ps, which is consistent with previously reported lifetimes that relied on the standard γ-ray techniques. The charge plunger technique is a complementary approach to lifetime measurements of excited states that depopulate through both γ-ray emission and internal conversion. In cases where it is not possible to detect Doppler-shifted γ rays, for example, in heavy nuclei where internal conversion dominates, it may well be the only feasible lifetime analysis approach.


Keywords: nuclear physics

Free keywords: charge plunger; plunger; nuclear-state lifetimes; RDDSDDCM


Contributing organizations


Ministry reporting: Yes


Last updated on 2020-17-08 at 13:46