Intruder bands in 108Sn

R. Wadsworth; H. R. Andrews; R. M. Clark; D. B. Fossan; A. Galindo-Uribarri; J. R. Hughes; V. P. Janzen; D. R. LaFosse; S. M. Mullins; E. S. Paul; D. C. Radford; H. Schnare; P. Vaska; D. Ward; J. N. Wilson; R. Wyss

doi:10.1016/0375-9474(93)90163-R

Intruder bands in ¹⁰⁸Sn

R. Wadsworth, H. R. Andrews, R. M. Clark, D. B. Fossan, A. Galindo-Uribarri, J. R. Hughes, V. P. Janzen, D. R. LaFosse, S. M. Mullins, E. S. Paul, D. C. Radford, H. Schnare, P. Vaska, D. Ward, J. N. Wilson, R. Wyss

Research output: Contribution to journal › Article › peer-review

65 Scopus citations

Abstract

The nucleus ¹⁰⁸Sn has been populated via the ⁵⁴Fe(⁵⁸Ni, 4p) reaction channel at a beam energy of 243 MeV. The high-spin structure is dominated by three ΔI = 2 rotational sequences. These bands can be interpreted in terms of particle-hole excitations involving the proton g_{7 2}, g_{9 2} and h_{11 2} orbitals and also aligned neutrons from the bottom of the h_{11 2} shell. Lifet measurements have also been performed using the Doppler-shift attenuation method. These data have enabled quadrupole moments to be deduced for the two strongest bands. The results yield Q₀ = 2.6±0.4 e·b for the positive-parity band and 3.4 ± 0.6 fse·b for one of the proposed negative-parity bands. These values yield quadrupole deformations of β₂ = 0.20 and 0.26, respectively, for the two bands. The results obtained are discussed in terms of Woods-Saxon and total routhian surface calculations.

Original language	English
Pages (from-to)	461-476
Number of pages	16
Journal	Nuclear Physics A
Volume	559
Issue number	3
DOIs	https://doi.org/10.1016/0375-9474(93)90163-R
State	Published - Jun 28 1993
Externally published	Yes

Funding

This work was supported by AECL Research and by grants from the UK Sciencea nd EngineeringR esearchC ouncil, the Natural Sciencesa nd Engineering Research Council of Canada, the US NSF and NATO under grant number CRG.910182.T wo of us (R.M.C. and J.N.W.) also ac~owledge receipt of UK SERC postgraduates tudentshipsW. e also wish to thank the crew of the Chalk River TASCC laboratoryf or providingt he beam,a nd P. Dmytrenkof or producing the target.

Funders	Funder number
Natural Sciencesa nd Engineering Research Council of Canada
UK Sciencea nd EngineeringR esearchC ouncil
National Science Foundation
North Atlantic Treaty Organization	CRG.910182
Australian Egg Corporation Limited

Keywords

Nuclear reactions

Access to Document

10.1016/0375-9474(93)90163-R

Cite this

@article{b07da52f022f46428047dc2a50fe5729,

title = "Intruder bands in 108Sn",

abstract = "The nucleus 108Sn has been populated via the 54Fe(58Ni, 4p) reaction channel at a beam energy of 243 MeV. The high-spin structure is dominated by three ΔI = 2 rotational sequences. These bands can be interpreted in terms of particle-hole excitations involving the proton g 7 2, g 9 2 and h 11 2 orbitals and also aligned neutrons from the bottom of the h 11 2 shell. Lifet measurements have also been performed using the Doppler-shift attenuation method. These data have enabled quadrupole moments to be deduced for the two strongest bands. The results yield Q0 = 2.6±0.4 e·b for the positive-parity band and 3.4 ± 0.6 fse·b for one of the proposed negative-parity bands. These values yield quadrupole deformations of β2 = 0.20 and 0.26, respectively, for the two bands. The results obtained are discussed in terms of Woods-Saxon and total routhian surface calculations.",

keywords = "Nuclear reactions",

author = "R. Wadsworth and Andrews, {H. R.} and Clark, {R. M.} and Fossan, {D. B.} and A. Galindo-Uribarri and Hughes, {J. R.} and Janzen, {V. P.} and LaFosse, {D. R.} and Mullins, {S. M.} and Paul, {E. S.} and Radford, {D. C.} and H. Schnare and P. Vaska and D. Ward and Wilson, {J. N.} and R. Wyss",

year = "1993",

month = jun,

day = "28",

doi = "10.1016/0375-9474(93)90163-R",

language = "English",

volume = "559",

pages = "461--476",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

number = "3",

}

TY - JOUR

T1 - Intruder bands in 108Sn

AU - Wadsworth, R.

AU - Andrews, H. R.

AU - Clark, R. M.

AU - Fossan, D. B.

AU - Galindo-Uribarri, A.

AU - Hughes, J. R.

AU - Janzen, V. P.

AU - LaFosse, D. R.

AU - Mullins, S. M.

AU - Paul, E. S.

AU - Radford, D. C.

AU - Schnare, H.

AU - Vaska, P.

AU - Ward, D.

AU - Wilson, J. N.

AU - Wyss, R.

PY - 1993/6/28

Y1 - 1993/6/28

N2 - The nucleus 108Sn has been populated via the 54Fe(58Ni, 4p) reaction channel at a beam energy of 243 MeV. The high-spin structure is dominated by three ΔI = 2 rotational sequences. These bands can be interpreted in terms of particle-hole excitations involving the proton g 7 2, g 9 2 and h 11 2 orbitals and also aligned neutrons from the bottom of the h 11 2 shell. Lifet measurements have also been performed using the Doppler-shift attenuation method. These data have enabled quadrupole moments to be deduced for the two strongest bands. The results yield Q0 = 2.6±0.4 e·b for the positive-parity band and 3.4 ± 0.6 fse·b for one of the proposed negative-parity bands. These values yield quadrupole deformations of β2 = 0.20 and 0.26, respectively, for the two bands. The results obtained are discussed in terms of Woods-Saxon and total routhian surface calculations.

AB - The nucleus 108Sn has been populated via the 54Fe(58Ni, 4p) reaction channel at a beam energy of 243 MeV. The high-spin structure is dominated by three ΔI = 2 rotational sequences. These bands can be interpreted in terms of particle-hole excitations involving the proton g 7 2, g 9 2 and h 11 2 orbitals and also aligned neutrons from the bottom of the h 11 2 shell. Lifet measurements have also been performed using the Doppler-shift attenuation method. These data have enabled quadrupole moments to be deduced for the two strongest bands. The results yield Q0 = 2.6±0.4 e·b for the positive-parity band and 3.4 ± 0.6 fse·b for one of the proposed negative-parity bands. These values yield quadrupole deformations of β2 = 0.20 and 0.26, respectively, for the two bands. The results obtained are discussed in terms of Woods-Saxon and total routhian surface calculations.

KW - Nuclear reactions

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U2 - 10.1016/0375-9474(93)90163-R

DO - 10.1016/0375-9474(93)90163-R

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