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1.	Wilson, A. N., et al. (author) Magnetic dipole bands in 190Hg : First evidence of excitations across the Z = 82 sub-shell in Hg nuclei 2001 In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 0370-2693. ; 505:1-4, s. 6-14 Journal article (peer-reviewed)abstract An experiment aimed at studying high-spin states in 190Hg was performed with the Eurogam II array. The data have revealed the presence of cascades of magnetic dipole transitions with some unexpected properties. Unlike the MI bands previously observed in the heavier Hg isotopes, these structures have extremely large B(M1)/B(E2) ratios, The observation of a third dipole band with much lower B(M1)/B(E2) values in the same spin/excitation energy regime suggests that the bands may represent configurations occurring in different minima in the potential energy surface. Configuration-dependent Cranked Nilsson-Strutinsky calculations predict the presence of a minimum in the nuclear potential energy surface at a deformation of ε ≅ 0.2, γ ≅ -90°, occurring when a proton is excited across the Z = 82 shell-gap into an h9/2 orbital. It is suggested that the bands exhibiting anomalously large B(M1)/B(E2) ratios may be associated with this minimum.
2.	Podolyak, Z., et al. (author) gamma-ray spectroscopy with a He-8 beam 2003 In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 511:3, s. 354-359 Journal article (peer-reviewed)abstract The He-8 + Pb-208 reaction was studied in the first experiment with the EXOGAM germanium detector array using beam delivered by the SPIRAL facility. gamma-rays from direct and fusion-evaporation reactions were observed with high resolution. gamma-gamma coincidence data were obtained at a beam intensity level of 105 8He particles per second. Specially designed absorbers and beam detectors could further reduce the background radiation by orders of magnitude.

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Type of publication: journal article (2)

Type of content: peer-reviewed (2)

Author/Editor: Azaiez, F. (2); Redon, N. (2); Ducroux, L. (1); Tengblad, O (1); Wood, R (1); Meyer, M. (1); show more...; Casandjian, J. M. (1); Janssens, R. V. F. (1); Ragnarsson, I. (1); Ahmad, I (1); Astier, A. (1); Cederwall, Bo (1); Cullen, D. M. (1); de France, G. (1); Korichi, A. (1); Lopez-Martens, A. (1); Podolyak, Z. (1); Pucknell, V. (1); Wadsworth, R. (1); Walker, P.M. (1); Fynbo, H. (1); Franchoo, S. (1); Gorska, M. (1); Dombradi, Z. (1); Dracoulis, G. D. (1); Hubel, H. (1); Sletten, G (1); Carpenter, M P (1); Khoo, T L (1); Lauritsen, T (1); Kopatch, Y. (1); Fraile, L. M. (1); Mandal, S. (1); Wheldon, C. (1); Wilson, J. N. (1); Molnár, J. (1); Timár, J. (1); Wilson, A. N. (1); Stanoiu, M. (1); Paul, E. S. (1); Mach, H (1); Porquet, M. G. (1); Nisius, D. (1); CROWELL, B (1); Lane, G. J. (1); Blumenthal, D. J. (1); HANNACHI, F (1); Sharpey-Schafer, J. ... (1); Gall, B.J.P. (1); Plociennik, W (1); show less...

University: Royal Institute of Technology (1); Lund University (1)

Language: English (2)

Research subject (UKÄ/SCB): Natural sciences (1)

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