Isobaric analog states in rare-earth nuclei studied with the (3He, t) charge-exchange reaction at θL = 0°

J. Jänecke, E.H.L. Aarts, A.G. Drentje, M.N. Harakeh, C. Gaarde

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The (3He, t) charge-exchange reaction leading to the ground-state isobaric analog states (IAS) of 152, 154, 156, 158, 160Gd, 160,162Dy, 162,164,166,168,170Er, 170, 172, 174, 176Yb and 176, 178, 180Hf has been studied at ¿L = 0° and E(3He) = 60.5 MeV. The reaction 28Si(3He, t)28P was used for energy calibration. The centroid energies of most IAS were determined to ±6 keV. Coulomb displacement energies have been extracted from the measured Q-values. They display the influence of non-spherical nuclear shapes which increase the rms radii and lower the Coulomb displacement energies. The dependence on both quadrupole and hexadecapole deformations is apparent with deformation parameters in good agreement with results from other measurements. The total widths G of the IAS are in the range 30 to 110 keV. They increase more strongly with neutron excess than is known for the IAS of the Sn and Te isotopes. The width of the IAS of 176Yb is anomalously low. The zero-degree (3He, t) cross sections are in the range 5 to 20 µb/sr. They generally increase with neutron excess except for the sequence of Yb isotopes. No systematic dependence on (N - Z) appears to exist. Excitation energies and zero-degree cross sections for the reactions 28Si(3He, t)28P, 16O(3He,t)16F and 12C(3He,t)12N are reported.
Original languageEnglish
Pages (from-to)39-59
Number of pages21
JournalNuclear Physics A
Volume394
Issue number1-2
DOIs
Publication statusPublished - 1983
Externally publishedYes

Cite this

Jänecke, J. ; Aarts, E.H.L. ; Drentje, A.G. ; Harakeh, M.N. ; Gaarde, C. / Isobaric analog states in rare-earth nuclei studied with the (3He, t) charge-exchange reaction at θL = 0°. In: Nuclear Physics A. 1983 ; Vol. 394, No. 1-2. pp. 39-59.
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abstract = "The (3He, t) charge-exchange reaction leading to the ground-state isobaric analog states (IAS) of 152, 154, 156, 158, 160Gd, 160,162Dy, 162,164,166,168,170Er, 170, 172, 174, 176Yb and 176, 178, 180Hf has been studied at ¿L = 0° and E(3He) = 60.5 MeV. The reaction 28Si(3He, t)28P was used for energy calibration. The centroid energies of most IAS were determined to ±6 keV. Coulomb displacement energies have been extracted from the measured Q-values. They display the influence of non-spherical nuclear shapes which increase the rms radii and lower the Coulomb displacement energies. The dependence on both quadrupole and hexadecapole deformations is apparent with deformation parameters in good agreement with results from other measurements. The total widths G of the IAS are in the range 30 to 110 keV. They increase more strongly with neutron excess than is known for the IAS of the Sn and Te isotopes. The width of the IAS of 176Yb is anomalously low. The zero-degree (3He, t) cross sections are in the range 5 to 20 µb/sr. They generally increase with neutron excess except for the sequence of Yb isotopes. No systematic dependence on (N - Z) appears to exist. Excitation energies and zero-degree cross sections for the reactions 28Si(3He, t)28P, 16O(3He,t)16F and 12C(3He,t)12N are reported.",
author = "J. J{\"a}necke and E.H.L. Aarts and A.G. Drentje and M.N. Harakeh and C. Gaarde",
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Isobaric analog states in rare-earth nuclei studied with the (3He, t) charge-exchange reaction at θL = 0°. / Jänecke, J.; Aarts, E.H.L.; Drentje, A.G.; Harakeh, M.N.; Gaarde, C.

In: Nuclear Physics A, Vol. 394, No. 1-2, 1983, p. 39-59.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Isobaric analog states in rare-earth nuclei studied with the (3He, t) charge-exchange reaction at θL = 0°

AU - Jänecke, J.

AU - Aarts, E.H.L.

AU - Drentje, A.G.

AU - Harakeh, M.N.

AU - Gaarde, C.

PY - 1983

Y1 - 1983

N2 - The (3He, t) charge-exchange reaction leading to the ground-state isobaric analog states (IAS) of 152, 154, 156, 158, 160Gd, 160,162Dy, 162,164,166,168,170Er, 170, 172, 174, 176Yb and 176, 178, 180Hf has been studied at ¿L = 0° and E(3He) = 60.5 MeV. The reaction 28Si(3He, t)28P was used for energy calibration. The centroid energies of most IAS were determined to ±6 keV. Coulomb displacement energies have been extracted from the measured Q-values. They display the influence of non-spherical nuclear shapes which increase the rms radii and lower the Coulomb displacement energies. The dependence on both quadrupole and hexadecapole deformations is apparent with deformation parameters in good agreement with results from other measurements. The total widths G of the IAS are in the range 30 to 110 keV. They increase more strongly with neutron excess than is known for the IAS of the Sn and Te isotopes. The width of the IAS of 176Yb is anomalously low. The zero-degree (3He, t) cross sections are in the range 5 to 20 µb/sr. They generally increase with neutron excess except for the sequence of Yb isotopes. No systematic dependence on (N - Z) appears to exist. Excitation energies and zero-degree cross sections for the reactions 28Si(3He, t)28P, 16O(3He,t)16F and 12C(3He,t)12N are reported.

AB - The (3He, t) charge-exchange reaction leading to the ground-state isobaric analog states (IAS) of 152, 154, 156, 158, 160Gd, 160,162Dy, 162,164,166,168,170Er, 170, 172, 174, 176Yb and 176, 178, 180Hf has been studied at ¿L = 0° and E(3He) = 60.5 MeV. The reaction 28Si(3He, t)28P was used for energy calibration. The centroid energies of most IAS were determined to ±6 keV. Coulomb displacement energies have been extracted from the measured Q-values. They display the influence of non-spherical nuclear shapes which increase the rms radii and lower the Coulomb displacement energies. The dependence on both quadrupole and hexadecapole deformations is apparent with deformation parameters in good agreement with results from other measurements. The total widths G of the IAS are in the range 30 to 110 keV. They increase more strongly with neutron excess than is known for the IAS of the Sn and Te isotopes. The width of the IAS of 176Yb is anomalously low. The zero-degree (3He, t) cross sections are in the range 5 to 20 µb/sr. They generally increase with neutron excess except for the sequence of Yb isotopes. No systematic dependence on (N - Z) appears to exist. Excitation energies and zero-degree cross sections for the reactions 28Si(3He, t)28P, 16O(3He,t)16F and 12C(3He,t)12N are reported.

U2 - 10.1016/0375-9474(83)90160-4

DO - 10.1016/0375-9474(83)90160-4

M3 - Article

VL - 394

SP - 39

EP - 59

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-2

ER -