Hyperfine interaction and g-factor measurements in Er isotopes

K. H. Speidel, G. J. Kumbartzki, W. Knauer, R. Kuhnen, G. Kraft, J. Gerber, M. B. Goldberg, G. Goldring, A. Zemel

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Energy levels in 160Er and 159Er were excited in the reactions 28Si(136Xe, 4n)160Er and 28Si(136Xe, 5n)159Er, and the product nuclei, recoiling with a velocity v = 0.07c were stopped in a plunger instrument after traversing a volume of hydrogen gas. The angular distribution of de-excitation γ-rays was studied as a function of flight time and gas pressure. Appreciable perturbations were detected in 160Er at times as short as 2 ps and in an angular momentum region as high as 12ħ. No perturbation could be detected in the 21/2+ level of 159Er even after 12 ps, signifying a low value for the g-factor of this level.

Original languageEnglish
Pages (from-to)176-184
Number of pages9
JournalNuclear Physics A
Issue number1
StatePublished - 1 Jan 1980
Externally publishedYes


  • Nuclear reaction

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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