MAGNETIC DIPOLE SPIN-RESONANCE IN RARE-EARTH NUCLEI

被引：25
作者：
DECOSTER, C [1 ]
HEYDE, K [1 ]
机构：
[1] INST THEORET PHYS,B-9000 GHENT,BELGIUM
来源：
PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 19期
关键词：
D O I：
10.1103/PhysRevLett.66.2456
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A magnetic dipole spin resonance around 6-8 MeV is described for rare-earth nuclei, ranging from Ce-142 to Pt-198. Starting from an unperturbed basis of K-pi = 1+ two-quasiparticle states, constructed within the Nilsson model and applying the BCS formalism, one can quantitatively estimate the total spin M1 strength. We include Coriolis mixing and residual quadrupole and spin separable forces and study the spin resonance in more detail for a few representative examples, Nd-148, Sm-154, Dy-164, and Yb-174. A double-humped structure in the spin M1 strength around 6-8 MeV results from the calculations, and is found to be related to separate proton and neutron spin-flip excitations.
引用
收藏
页码：2456 / 2459
页数：4
相关论文
共 25 条
  • [1] BERG UEP, 1987, ANNU REV NUCL PART S, V37, P33
  • [2] NEW MAGNETIC DIPOLE EXCITATION MODE STUDIED IN THE HEAVY DEFORMED NUCLEUS GD-156 BY INELASTIC ELECTRON-SCATTERING
    BOHLE, D
    RICHTER, A
    STEFFEN, W
    DIEPERINK, AEL
    IUDICE, NL
    PALUMBO, F
    SCHOLTEN, O
    [J]. PHYSICS LETTERS B, 1984, 137 (1-2) : 27 - 31
  • [3] Bohr Aa., 1975, NUCL STRUCTURE, VII
  • [4] SYSTEMATIC STUDY OF M1 STRENGTH IN THE RARE-EARTH REGION
    DECOSTER, C
    HEYDE, K
    [J]. PHYSICAL REVIEW LETTERS, 1989, 63 (26) : 2797 - 2800
  • [5] DECOSTER C, IN PRESS HUCL PHYS A
  • [6] DECOSTER C, 1990, 7TH P INT S CAPT GAM
  • [7] ON THE NATURE OF LOW-LYING COLLECTIVE 1+ STATES IN THE HEAVY DEFORMED-NUCLEI SM-154,GD-156,DY-164 AND IN THE F7/2 SHELL NUCLEUS TI-46
    DJALALI, C
    MARTY, N
    MORLET, M
    WILLIS, A
    JOURDAIN, JC
    BOHLE, D
    HARTMANN, U
    KUCHLER, G
    RICHTER, A
    CASKEY, G
    CRAWLEY, GM
    GALONSKY, A
    [J]. PHYSICS LETTERS B, 1985, 164 (4-6) : 269 - 273
  • [8] MAGNETIC DIPOLE ELECTROEXCITATIONS IN RARE-EARTH NUCLEI
    FAESSLER, A
    NOJAROV, R
    SCHOLTZ, FG
    [J]. NUCLEAR PHYSICS A, 1990, 515 (02) : 237 - 272
  • [9] SPIN EXCITATIONS IN THE DEFORMED-NUCLEI SM-154, GD-158 AND ER-168
    FREKERS, D
    WORTCHE, HJ
    RICHTER, A
    ABEGG, R
    AZUMA, RE
    CELLER, A
    CHAN, C
    DRAKE, TE
    HELMER, R
    JACKSON, KP
    KING, JD
    MILLER, CA
    SCHUBANK, R
    VETTERLI, MC
    YEN, S
    [J]. PHYSICS LETTERS B, 1990, 244 (02) : 178 - 182
  • [10] SPIN RESPONSE OF MAGNETIC DIPOLE TRANSITIONS IN GD-156 AND DY-164
    FREKERS, D
    BOHLE, D
    RICHTER, A
    ABEGG, R
    AZUMA, RE
    CELLER, A
    CHAN, C
    DRAKE, TE
    JACKSON, KP
    KING, JD
    MILLER, CA
    SCHUBANK, R
    WATSON, J
    YEN, S
    [J]. PHYSICS LETTERS B, 1989, 218 (04) : 439 - 443
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