Mass measurement of Re-190. (6th July 2020)

• Record Type: Journal Article
• Authors: Griffiths, M R; Wheldon, C; Kokalova, Tz; Turner, A; Pirrie, S; Ziman, V; Ashwood, N I; Malcolm, J D; Barr, M; Freer, M; Faestermann, Th; Wirth, H-F; Hertenberger, R; Gernhäuser, R; Krücken, R
• Is Part Of: Journal of physics. Volume 47:Number 8(2020:Aug.)
• Publication Date: 2020-07-06
• Subjects: 75Re 190atomic mass -- 75Re 190mass excess -- nuclear reaction 192Os(d, α)190Re -- Q3D magnetic spectrograph; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/1361-6471/ab98e3
• Languages: English
• ISSNs: 0954-3899

Abstract

Abstract: In this paper, a measurement of the atomic mass and mass excess of Re 75 190 are presented. This isotope and Ir 77 192 were produced at the Maier-Leibnitz Laboratory (MLL) in Munich in the 192 Os( d, α ) 190 Re and 194 Pt( d, α ) 192 Ir reactions. The Q3D magnetic spectrograph was used to measure the momenta of the α -particle ejectiles in order to reconstruct states in both 190 Re and 192 Ir. A mass calibration was performed using known energy levels in 192 Ir. These measurements were used to obtain a new value of the mass excess of 190 Re, −35583 ± 5 keV. The previously known literature value is −35640 ± 70 keV.