Trap-assisted separation of nuclear states for gamma-ray spectroscopy: the example of 100Nb

• Published in: Journal of physics. G, Nuclear and particle physics Nuclear and particle physics, 2012-01, Vol.39 (1), p.015101
• Main Authors: Triguero, C Rodríguez, Bruce, A M, Eronen, T, Moore, I D, Bowry, M, Bacelar, A M Denis, Deo, A Y, Elomaa, V-V, Gorelov, D, Hakala, J, Jokinen, A, Kankainen, A, Karvonen, P, Kolhinen, V S, Kurpeta, J, Malkiewicz, T, Mason, P J R, Penttilä, H, Reponen, M, Rinta-Antila, S, Rissanen, J, Saastamoinen, A, Simpson, G S, Äystö, J
• Format: Article
• Language: English
• Subjects: Exact sciences and technology; Nuclear physics; Nuclear Theory; Physics; The physics of elementary particles and fields
• ISSN: 0954-3899; 1361-6471
• DOI: 10.1088/0954-3899/39/1/015101

Low-lying levels in 100Mo are known to be populated by beta decay from both the ground and isomeric states in 100Nb. The small energy difference (∼3 ppm) between the two parent states and the similarity of their half-lives make it difficult to distinguish experimentally between the two decay paths. A new technique for separating different states of nuclei has recently been developed in a series of experiments at the IGISOL facility, using the JYFLTRAP installation, at the University of Jyväskylä where mass resolution ∼2 ppm was achieved in mass measurements and in the production of 133mXe. This paper reports on the extension of this technique to allow the separate study of the gamma-ray decay of levels populated by the different parent states.