Nuclear data sheets for A = 166

Ignatochkin, A.E.; Shurshikov, E.N.; Jaborov, Yu. F.

doi:10.1016/s0090-3752(87)80052-2

Cited by 46 publications

(15 citation statements)

References 150 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extracted excitation energies of states in ' Er are in overall good agreement with the previous work [7,8] with difFerences in excitation energies typically no larger than 2 keV for the most strongly populated states; for the weakly populated peaks there can be deviations up to 7 keV.…”

Section: Results and Analysissupporting

confidence: 89%

“…'It is unlikely that the (14+ ) 1880 keV level adopted in Ref. [8] corresponds to the state populated in the present proton transfer measurement.…”

Section: Results and Analysismentioning

confidence: 80%

“…The reaction products were identified by plotting AE vs E 'd &. The measurements were calibrated internally using known [7,8] excitation energies in ' Er and with proton-transfer reactions on "' Sn targets, where the reaction products were measured at identical spectrometer settings and the known [9] energies of states in " ' 'Sb were used.…”

Section: Kxperimentai Proceduresmentioning

confidence: 99%

See 2 more Smart Citations

Search for theKπ=1+two-proton band in
Li
¹
,
Magnus
²
,
Smith
³

et al. 1993
Phys. Rev. C

View full text Add to dashboard Cite

The ' Ho (a, t) and ( He, d) reactions have been measured at beam energies of 40 and 25 MeV to look for the K =1+[9 [514] --[523]] two-proton band structure in '66Er. Reaction products were analyzed using a quadrupole-three-dipole spectrometer. Distorted-wave Born approximation predictions were used to extract candidate states with angular momentum transfer 1=5. The measured strengths of all the candidates for l =5 transitions were compared with the Nilsson fingerprint pattern of the K =1+ [ 2 [514] -2 [523]] band to identify the structure. No strong population of this configuration was found. At best two tentative candidates for the I =3+ and 4+ members of this band could be identified, which would represent at most 38% of the expected strength for this configuration. The bandhead for this tentative K =1+ excitation does not correspond to any I =1+ state observed in the Er(y, y') reaction. PACS number(s): 25.55. Hp, 21.10.Re, 27.70.+ q

show abstract

Section: Results and Analysissupporting

confidence: 89%

“…'It is unlikely that the (14+ ) 1880 keV level adopted in Ref. [8] corresponds to the state populated in the present proton transfer measurement.…”

Section: Results and Analysismentioning

confidence: 80%

Section: Kxperimentai Proceduresmentioning

confidence: 99%

See 1 more Smart Citation

Search for theKπ=1+two-proton band in
Li
¹
,
Magnus
²
,
Smith
³

et al. 1993
Phys. Rev. C

View full text Add to dashboard Cite

show abstract

“…Standard 5-force dependence of the neutron-proton interaction Vnp [5,8,9] was used in our numerical calculations. The parameters of Vnp were taken from [8] where they were obtained by a least squares fit of all Gallagher-Moszkowski split- a Experimental energies were taken from [41] b Experimental energies were taken from [42] c Experimental energies were taken from [30] a Experimental energies were taken from [45] tings in the rare earth region. Since the energies qp~ and structure of intrinsic states are sensitive to single-quasiparticle energies e~ and er (see the denominators in (28), (29)), we altered single-quasiparticle energies of some calculated states near the Fermi surface to achieve agreement with their experimental positions in the single-quasiparticle spectra of odd-A neighbors [37].…”

Section: Resultsmentioning

confidence: 99%

Microscopic description of vibrational degrees of freedom in odd-odd isotopes of Ho

Kvasil

Sheline

Nesterenko

et al. 1992

Z. Physik A - Hadrons and Nuclei

View full text Add to dashboard Cite

The microscopic approach for the description of low-lying intrinsic states in deformed odd-odd nuclei is formulated as a generalization of the quasiparticle-phonon model. In comparison with other models used for deformed odd-odd nuclei, the approach proposed in this paper involves vibrational degrees of freedom of the doubly-even core, their coupling to quasiparticle degrees of freedom and the n-p interaction between the odd particles. Our model treats all of these modes of nuclear motion on the same microscopic footing. This proposed model is applied to calculate the energies and phononquasiparticle structure of the intrinsic states of the oddodd Ho isotopes with A = 160, 162, 164, 166 and 168. It is found that the low-lying intrinsic states in the odd-odd Ho isotopes have only small vibrational components. In general the vibrational states are fragmented over many intrinsic states.

show abstract

“…We in-eluded the 15 lowest intrinsic configurations,~4, r(K ) ), for each parity (including all configurations given in Tables I and II). For instance, we took into account the intrinsic states with K =1+ with the following main components: 7r , ' [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]-v -', [523] and 3r -', [523]v -, ' [512].…”

mentioning

confidence: 99%

Configurational assignments inHo168and comparison withHo
Sheline
¹
,
Kvasil
²
,
Sood
³

1991
Phys. Rev. C
6
0
4
0
View full text Add to dashboard Cite

Comparison of the six states recently observed in ' Ho with the states in ' Ho suggests configurational assignments for all six states. The validity of these assignments is strengthened by the allowed unhindered beta decay of ' Dy to the two 1+ states in ' Ho and by microscopic theoretical calculations of the quasiparticle structure of the corresponding states in ' Ho and ' Ho. I. INTRODUCTIONRecently, six low-lying states in ' Ho have been studied [1] following their population in the beta decay of Dy. Three firm and three tentative spin assignments were made to these six states. The first excited state with tentative spin 6+ is a 132-s isomer. These states and their assignments are shown to the left in Fig. 1. II. EXPERIMENTAL COMPARISON OF 166Ho AND 168HoThe states in ' Ho are also compared with the ' Ho states with known spin, parity, and Nilsson assignments [2] in Fig. 1. The energies and spins in '6 Ho and '66Ho are shown to the left and right, respectively, of the appropriate levels. A11 of the levels in ' Ho are lowered by 190.9 keV except the 1+ at 567.6 keV. This is done to put the -', +[523] --, ' [521] states in ' Ho and ' Ho at the same energy for the sake of comparison. The lowest five states in Fig. 1, all of which are neutron particle states in ' Ho, are expected to move coherently to facilitate this comparison. Only the 1+ state at 567.6 keV in Ho, which is a neutron hole state, is expected to move in the opposite direction. To take this into account it is raised by 190.0 keV rather than lowered on the relative energy scale. It should be noted that listed energies of the levels are those experimentally observed while the relative energies are those shown by the positions of the levels.When these adjustments are made, as shown in Fig. 1, the comparison of the level energies in ' Ho and ' Ho is quite remarkable. The agreement in the level schemes gives us confidence that the assignments which are known for ' Ho apply also to ' Ho. In addition, they tend to verify the assignments made in Ref.[1].The allowed unhindered ( A U) beta decays from ' Dy and ' Dy into the 1+ isobaric states of ' Ho and ' Ho, respectively, because of their uniqueness, are particularly powerful spectroscopic tools in assigning configurations.

show abstract

Nuclear data sheets for A = 166

Cited by 46 publications

References 150 publications

Search for theKπ=1+two-proton band in
Li
¹
,
Magnus
²
,
Smith
³

et al. 1993
Phys. Rev. C

Search for theKπ=1+two-proton band in
Li
¹
,
Magnus
²
,
Smith
³

et al. 1993
Phys. Rev. C

Microscopic description of vibrational degrees of freedom in odd-odd isotopes of Ho

Configurational assignments inHo168and comparison withHo
Sheline
¹
,
Kvasil
²
,
Sood
³

1991
Phys. Rev. C
6
0
4
0
View full text Add to dashboard Cite

Contact Info

Product

Resources

About

Nuclear data sheets for A = 166

Cited by 46 publications

References 150 publications

Search for theKπ=1+two-proton band inLi1, Magnus2, Smith3 et al. 1993Phys. Rev. C

Search for theKπ=1+two-proton band inLi1, Magnus2, Smith3 et al. 1993Phys. Rev. C

Microscopic description of vibrational degrees of freedom in odd-odd isotopes of Ho

Configurational assignments inHo168and comparison withHoSheline1, Kvasil2, Sood3 1991Phys. Rev. C6040View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Search for theKπ=1+two-proton band in
Li
¹
,
Magnus
²
,
Smith
³

et al. 1993
Phys. Rev. C

Search for theKπ=1+two-proton band in
Li
¹
,
Magnus
²
,
Smith
³

et al. 1993
Phys. Rev. C

Configurational assignments inHo168and comparison withHo
Sheline
¹
,
Kvasil
²
,
Sood
³

1991
Phys. Rev. C
6
0
4
0
View full text Add to dashboard Cite