Proton inelastic scattering on the transitional nucleus<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">Nd</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>144</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>

Cottle, P. D.; Aziz, S. M.; Kw, Kemper; Ml, Owens; El, Reber; Jd, Brown; Er, Jacobsen; Yy, Sharon

doi:10.1103/physrevc.43.59

Cited by 23 publications

(5 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The validity of this conjecture would imply that the 5; level should be hardly excited in high-energy electron scattering, which does not induce two-step excitations. Evidence of a strong direct excitation was already obtained by Cottle et al [28] from the analysis of (p,p') data and is clearly established by the present experiment.…”

Section: The Hexadecapole Statessupporting

confidence: 90%

Excitation of low-lying states in 144Nd by means of (e,e') scattering

et al. 1993

View full text Add to dashboard Cite

Section: The Hexadecapole Statessupporting

confidence: 90%

Excitation of low-lying states in 144Nd by means of (e,e') scattering

et al. 1993

View full text Add to dashboard Cite

“…[3] reveals several similarities between the two isotopes. First, the B(E2;0+, -+2+&) values for the two nuclei (24 and 28 W.u.…”

mentioning

confidence: 88%

“…In the Nd(p, p') experiment reported in Ref. [3], it was found that such a calculation underpredicted the observed cross section for the 5 state by an order of magnitude, implying that a simple octupole coupled interpretation for this 5 state is inappropriate.…”

mentioning

confidence: 96%

“…The Pq and Ps values used in the calculation are those extracted for the 2&+ and 3& states. In~Nd, such a calculation underpredicted the obser ved cross section for the 5] state by an order of magnitude, strongly indicating that the octupole coupled interpretation could not be applied there [3]. Instead, the~4 4Nd 5 state is connected to the ground state via a large E5 matrix element, indicating two-quasiparticle structure.…”

mentioning

confidence: 98%

“…3. Observed and calculated angular distributions of the differential cross sections of the 4+ states and the 5 state.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Test of octupole coupled5−state inNd146
Cottle
¹
,
Kennedy
²
,
Kemper
³

et al. 1991
Phys. Rev. C
Self Cite
5
0
2
0
View full text Add to dashboard Cite

The inelastic scattering of 35 MeV protons has been used to excite seven states below 2.1 MeV in Nd. A comparison between a coupled-channels calculation that assumes an octupole coupled structure for the 5 state at 1.517 MeV and the observed cross section suggests that the wave function of this state includes only a small two-quasiparticle component. In addition, the present results indicate that the level at 2.073 MeV, previously assigned J =4, actually has J =3 For some time, sequences of negative parity states (3 5, 7, etc. ) observed in spectra of even-even lanthanide nuclei have been interpreted in terms of the coupling of an octupole phonon to the sequence of states (2&, 4&, 6+&, etc. ) built on the ground state [1]. In vibrational and rotational nuclei, these negative-parity sequences can be called "octupole bands. " The octupole band interpretation is motivated by the similarity of the spacings between the states in the negative-parity band to corresponding spacings in the ground-state band. However, an octupole band interpretation can be tested via the collection of several different kinds of spectroscopic information. For example, the transition quadrupole moments for E2 transitions in an octupole band should be equal to those for the corresponding transitions in the ground-state band. One example of such a test is given in a recent study ['2 of high-spin states in 74Se.In another test [3 of the octupole band interpretation of negative-parity states, the inelastic scattering of protons by Nd was used to probe the 5 member of the negative-parity band. If a 5 state is indeed a member of an octupole band, then it should be populated in a (p, p') reaction via a two-step process involving successive F2 and E3 excitations. The cross section for such a process can be computed by performing a coupled-channels calculation using P2 and Ps parameters extracted from an analysis of the differential cross sections of the 2+& and 3& states in the nucleus. In the Nd(p, p') experiment reported in Ref. [3], it was found that such a calculation underpredicted the observed cross section for the 5 state by an order of magnitude, implying that a simple octupole coupled interpretation for this 5 state is inappropriate.Predictions of strong octupole correlations and even static octupole deformation have been made in the N=86 -90 region (for example, see Ref.[4]). Therefore, tests similar to the ones described above are necessary to provide a more detailed understanding of the negativeparity states of nuclei in this region. In the present work, we report on a study of Nd using proton inelastic scattering. Results for seven states having J = 2 -5 are reported. In this nucleus, a negative-parity band of states was observed previously in a p-ray study and was interpreted as an octupole band [4].The data reported here were obtained using 35 MeV protons accelerated by the Princeton University AVF Cyclotron. The targets used for this experiment consisted of NdqOs (enriched to 97.5% in~~s Nd) evaporated onto 20-pg/cm2 carbon foils. Th...

show abstract