Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z=104 nucleus Rf256

P. T. Greenlees; J. Rubert; J. Piot; B. J.P. Gall; L. L. Andersson; M. Asai; Z. Asfari; D. M. Cox; F. Dechery; O. Dorvaux; T. Grahn; K. Hauschild; G. Henning; A. Herzan; R. D. Herzberg; F. P. Heßberger; U. Jakobsson; P. Jones; R. Julin; S. Juutinen; S. Ketelhut; T. L. Khoo; M. Leino; J. Ljungvall; A. Lopez-Martens; R. Lozeva; P. Nieminen; J. Pakarinen; P. Papadakis; E. Parr; P. Peura; P. Rahkila; S. Rinta-Antila; P. Ruotsalainen; M. Sandzelius; J. Sarén; C. Scholey; D. Seweryniak; J. Sorri; B. Sulignano; Ch Theisen; J. Uusitalo; M. Venhart

doi:10.1103/PhysRevLett.109.012501

Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z=104 nucleus Rf256

P. T. Greenlees, J. Rubert, J. Piot, B. J.P. Gall, L. L. Andersson, M. Asai, Z. Asfari, D. M. Cox, F. Dechery, O. Dorvaux, T. Grahn, K. Hauschild, G. Henning, A. Herzan, R. D. Herzberg, F. P. Heßberger, U. Jakobsson, P. Jones, R. Julin, S. JuutinenS. Ketelhut, T. L. Khoo, M. Leino, J. Ljungvall, A. Lopez-Martens, R. Lozeva, P. Nieminen, J. Pakarinen, P. Papadakis, E. Parr, P. Peura, P. Rahkila, S. Rinta-Antila, P. Ruotsalainen, M. Sandzelius, J. Sarén, C. Scholey, D. Seweryniak, J. Sorri, B. Sulignano, Ch Theisen, J. Uusitalo, M. Venhart

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Abstract

The rotational band structure of the Z=104 nucleus Rf256 has been observed up to a tentative spin of 20 using state-of-the-art γ-ray spectroscopic techniques. This represents the first such measurement in a superheavy nucleus whose stability is entirely derived from the shell-correction energy. The observed rotational properties are compared to those of neighboring nuclei and it is shown that the kinematic and dynamic moments of inertia are sensitive to the underlying single-particle shell structure and the specific location of high-j orbitals. The moments of inertia therefore provide a sensitive test of shell structure and pairing in superheavy nuclei which is essential to ensure the validity of contemporary nuclear models in this mass region. The data obtained show that there is no deformed shell gap at Z=104, which is predicted in a number of current self-consistent mean-field models.

Original language	English
Article number	012501
Journal	Physical review letters
Volume	109
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.109.012501
Publication status	Published - Jul 3 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.109.012501

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Greenlees, P. T., Rubert, J., Piot, J., Gall, B. J. P., Andersson, L. L., Asai, M., Asfari, Z., Cox, D. M., Dechery, F., Dorvaux, O., Grahn, T., Hauschild, K., Henning, G., Herzan, A., Herzberg, R. D., Heßberger, F. P., Jakobsson, U., Jones, P., Julin, R., ... Venhart, M. (2012). Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z=104 nucleus Rf256. Physical review letters, 109(1), Article 012501. https://doi.org/10.1103/PhysRevLett.109.012501

Greenlees, PT, Rubert, J, Piot, J, Gall, BJP, Andersson, LL, Asai, M, Asfari, Z, Cox, DM, Dechery, F, Dorvaux, O, Grahn, T, Hauschild, K, Henning, G, Herzan, A, Herzberg, RD, Heßberger, FP, Jakobsson, U, Jones, P, Julin, R, Juutinen, S, Ketelhut, S, Khoo, TL, Leino, M, Ljungvall, J, Lopez-Martens, A, Lozeva, R, Nieminen, P, Pakarinen, J, Papadakis, P, Parr, E, Peura, P, Rahkila, P, Rinta-Antila, S, Ruotsalainen, P, Sandzelius, M, Sarén, J, Scholey, C, Seweryniak, D, Sorri, J, Sulignano, B, Theisen, C, Uusitalo, J & Venhart, M 2012, 'Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z=104 nucleus Rf256', Physical review letters, vol. 109, no. 1, 012501. https://doi.org/10.1103/PhysRevLett.109.012501

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title = "Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z=104 nucleus Rf256",

abstract = "The rotational band structure of the Z=104 nucleus Rf256 has been observed up to a tentative spin of 20 using state-of-the-art γ-ray spectroscopic techniques. This represents the first such measurement in a superheavy nucleus whose stability is entirely derived from the shell-correction energy. The observed rotational properties are compared to those of neighboring nuclei and it is shown that the kinematic and dynamic moments of inertia are sensitive to the underlying single-particle shell structure and the specific location of high-j orbitals. The moments of inertia therefore provide a sensitive test of shell structure and pairing in superheavy nuclei which is essential to ensure the validity of contemporary nuclear models in this mass region. The data obtained show that there is no deformed shell gap at Z=104, which is predicted in a number of current self-consistent mean-field models.",

author = "Greenlees, {P. T.} and J. Rubert and J. Piot and Gall, {B. J.P.} and Andersson, {L. L.} and M. Asai and Z. Asfari and Cox, {D. M.} and F. Dechery and O. Dorvaux and T. Grahn and K. Hauschild and G. Henning and A. Herzan and Herzberg, {R. D.} and He{\ss}berger, {F. P.} and U. Jakobsson and P. Jones and R. Julin and S. Juutinen and S. Ketelhut and Khoo, {T. L.} and M. Leino and J. Ljungvall and A. Lopez-Martens and R. Lozeva and P. Nieminen and J. Pakarinen and P. Papadakis and E. Parr and P. Peura and P. Rahkila and S. Rinta-Antila and P. Ruotsalainen and M. Sandzelius and J. Sar{\'e}n and C. Scholey and D. Seweryniak and J. Sorri and B. Sulignano and Ch Theisen and J. Uusitalo and M. Venhart",

year = "2012",

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doi = "10.1103/PhysRevLett.109.012501",

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T2 - Rotational properties of the Z=104 nucleus Rf256

AU - Greenlees, P. T.

AU - Rubert, J.

AU - Piot, J.

AU - Gall, B. J.P.

AU - Andersson, L. L.

AU - Asai, M.

AU - Asfari, Z.

AU - Cox, D. M.

AU - Dechery, F.

AU - Dorvaux, O.

AU - Grahn, T.

AU - Hauschild, K.

AU - Henning, G.

AU - Herzan, A.

AU - Herzberg, R. D.

AU - Heßberger, F. P.

AU - Jakobsson, U.

AU - Jones, P.

AU - Julin, R.

AU - Juutinen, S.

AU - Ketelhut, S.

AU - Khoo, T. L.

AU - Leino, M.

AU - Ljungvall, J.

AU - Lopez-Martens, A.

AU - Lozeva, R.

AU - Nieminen, P.

AU - Pakarinen, J.

AU - Papadakis, P.

AU - Parr, E.

AU - Peura, P.

AU - Rahkila, P.

AU - Rinta-Antila, S.

AU - Ruotsalainen, P.

AU - Sandzelius, M.

AU - Sarén, J.

AU - Scholey, C.

AU - Seweryniak, D.

AU - Sorri, J.

AU - Sulignano, B.

AU - Theisen, Ch

AU - Uusitalo, J.

AU - Venhart, M.

PY - 2012/7/3

Y1 - 2012/7/3

N2 - The rotational band structure of the Z=104 nucleus Rf256 has been observed up to a tentative spin of 20 using state-of-the-art γ-ray spectroscopic techniques. This represents the first such measurement in a superheavy nucleus whose stability is entirely derived from the shell-correction energy. The observed rotational properties are compared to those of neighboring nuclei and it is shown that the kinematic and dynamic moments of inertia are sensitive to the underlying single-particle shell structure and the specific location of high-j orbitals. The moments of inertia therefore provide a sensitive test of shell structure and pairing in superheavy nuclei which is essential to ensure the validity of contemporary nuclear models in this mass region. The data obtained show that there is no deformed shell gap at Z=104, which is predicted in a number of current self-consistent mean-field models.

AB - The rotational band structure of the Z=104 nucleus Rf256 has been observed up to a tentative spin of 20 using state-of-the-art γ-ray spectroscopic techniques. This represents the first such measurement in a superheavy nucleus whose stability is entirely derived from the shell-correction energy. The observed rotational properties are compared to those of neighboring nuclei and it is shown that the kinematic and dynamic moments of inertia are sensitive to the underlying single-particle shell structure and the specific location of high-j orbitals. The moments of inertia therefore provide a sensitive test of shell structure and pairing in superheavy nuclei which is essential to ensure the validity of contemporary nuclear models in this mass region. The data obtained show that there is no deformed shell gap at Z=104, which is predicted in a number of current self-consistent mean-field models.

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JF - Physical review letters

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ER -

Shell-structure and pairing interaction in superheavy nuclei: Rotational properties of the Z=104 nucleus Rf256

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