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TABLE I. (Continued.)

Table 3 I. (Continued.)

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FIG. 1. Level scheme of “Nd in which all bands linked to low-lying states are drawn. The highest states of bands Q11 and Q12 have beer cut to minimize the shrink of the figure.
FIG. 1. Level scheme of “Nd in which all bands linked to low-lying states are drawn. The highest states of bands Q11 and Q12 have beer cut to minimize the shrink of the figure.
TABLE I. Energies, intensities, anisotropies, multipolarities, and spin-parity assignments of y-ray transitions of '40Nd from the EUROBALL experiment. The transitions are grouped in bands and the transitions connecting a given band to low-lying states are listed at the end of each band separated by a blank line.
TABLE I. Energies, intensities, anisotropies, multipolarities, and spin-parity assignments of y-ray transitions of '40Nd from the EUROBALL experiment. The transitions are grouped in bands and the transitions connecting a given band to low-lying states are listed at the end of each band separated by a blank line.
TABLE I. (Continued.)
TABLE I. (Continued.)
“The error on the transition energies is 0.2 keV for transitions below 1000 keV and intensities larger than 5% of the '4°Nd reaction channel, 0.5 keV for transitions above 1000 keV and intensities lower than 5%, and 1 keV for transitions above 1200 keV and/or weaker than 1%. Relative intensities corrected for efficiency. The transition intensities were obtained from a combination of total projection and gated spectra. “The anisotropy has been deduced from two asymmetric y-y coincidence matrices sorted with all detectors on one axis and detectors at 90° and at forward/backward angles, respectively, on the other axis. The tentative spin-parity of the states are given in parenthesis. TABLE I. (Continued.)
“The error on the transition energies is 0.2 keV for transitions below 1000 keV and intensities larger than 5% of the '4°Nd reaction channel, 0.5 keV for transitions above 1000 keV and intensities lower than 5%, and 1 keV for transitions above 1200 keV and/or weaker than 1%. Relative intensities corrected for efficiency. The transition intensities were obtained from a combination of total projection and gated spectra. “The anisotropy has been deduced from two asymmetric y-y coincidence matrices sorted with all detectors on one axis and detectors at 90° and at forward/backward angles, respectively, on the other axis. The tentative spin-parity of the states are given in parenthesis. TABLE I. (Continued.)
FIG. 2. Double-gated spectra for bands Q1-Q4 in '4°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band.
FIG. 2. Double-gated spectra for bands Q1-Q4 in '4°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band.
FIG. 3. Double-gated spectra for the bands Q5—Q8 in 4°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band, while the peaks marked with a # are contaminants from other nuclei.
FIG. 3. Double-gated spectra for the bands Q5—Q8 in 4°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band, while the peaks marked with a # are contaminants from other nuclei.
FIG. 5. Double-gated spectra for bands D1—D4 in '°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band.
FIG. 5. Double-gated spectra for bands D1—D4 in '°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band.
FIG. 4. Double-gated spectra for the bands Q9-Q12 in '#°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band.
FIG. 4. Double-gated spectra for the bands Q9-Q12 in '#°Nd. The gates were set on selected transitions of each band. The transitions marked with asterisks represent the members of the band.
FIG. 9. (Color online) Calculated potential energy surfaces in the (€, y) plane for the [82,22(20)] configuration assigned to band Q1 of '4°Nd. The contour line separation is 0.25 MeV. configurations with one, two, or three neutrons in the three high-j orbitals which come in the region of the VN = 80 Fermi evel around w/wo = 0.04. The bands with negative parity and odd spin (a = 1) resulting from these proton and neutron configurations are shown in Fig. 12. Such figures have also been produced for the other spin-parity combinations and examined in the process of configuration assignment. A typical feature of the triaxial bands is a parabola-like behavior of the E — E,,q curves with a well defined minimum at some value of J. These are the bands of main interest here. Besides
FIG. 9. (Color online) Calculated potential energy surfaces in the (€, y) plane for the [82,22(20)] configuration assigned to band Q1 of '4°Nd. The contour line separation is 0.25 MeV. configurations with one, two, or three neutrons in the three high-j orbitals which come in the region of the VN = 80 Fermi evel around w/wo = 0.04. The bands with negative parity and odd spin (a = 1) resulting from these proton and neutron configurations are shown in Fig. 12. Such figures have also been produced for the other spin-parity combinations and examined in the process of configuration assignment. A typical feature of the triaxial bands is a parabola-like behavior of the E — E,,q curves with a well defined minimum at some value of J. These are the bands of main interest here. Besides
FIG. 8. (Color online) Calculated potential energy surfaces in the (¢2, y) plane for '4°Nd, with fixed parity and signature (7 = +, a = ( in the spin range relevant for the observed high-spin bands (J = 24*, 32+, 40*, 48+). The contour line separation is 0.25 MeV.
FIG. 8. (Color online) Calculated potential energy surfaces in the (¢2, y) plane for '4°Nd, with fixed parity and signature (7 = +, a = ( in the spin range relevant for the observed high-spin bands (J = 24*, 32+, 40*, 48+). The contour line separation is 0.25 MeV.
FIG. 12. (Color online) The configurations with negative parity and odd spin which result from the combination of the three proton configurations with two or three hj. particles and 19 neutron configurations with up to three high-j particles are drawn relative to the rotating liquid drop energy. The bands which are assigned to an observed band are drawn with heavy lines. Noncollective aligned states are encircled. FIG. 13. (Color online) The observed Q bands in !#°Nd are shown relative to the rotating liquid drop energy in the upper panel, the calculated bands assigned to them are drawn in the middle panel, and the differences between experiment and calculations are presented in the bottom panel. The same types of lines and symbols are used for the related bands in the three panels.
FIG. 12. (Color online) The configurations with negative parity and odd spin which result from the combination of the three proton configurations with two or three hj. particles and 19 neutron configurations with up to three high-j particles are drawn relative to the rotating liquid drop energy. The bands which are assigned to an observed band are drawn with heavy lines. Noncollective aligned states are encircled. FIG. 13. (Color online) The observed Q bands in !#°Nd are shown relative to the rotating liquid drop energy in the upper panel, the calculated bands assigned to them are drawn in the middle panel, and the differences between experiment and calculations are presented in the bottom panel. The same types of lines and symbols are used for the related bands in the three panels.
TABLE II. Configurations assigned to the high-spin bands of °Nd. The first column and first line indicate the neutron and proton configurations, respectively, labeled according to Eq. (1). Their total parity and signature is specified in parentheses. The band and its (parity, signature) are indicated at the intersection of each column and line.
TABLE II. Configurations assigned to the high-spin bands of °Nd. The first column and first line indicate the neutron and proton configurations, respectively, labeled according to Eq. (1). Their total parity and signature is specified in parentheses. The band and its (parity, signature) are indicated at the intersection of each column and line.
TABLE III. Experimental and calculated properties of the Q bands in '4°Nd. The configuration assignments are given according to Eq. (2).
TABLE III. Experimental and calculated properties of the Q bands in '4°Nd. The configuration assignments are given according to Eq. (2).
FIG. 14. Calculated single-proton Routhians. Full line z = +, dash-dotted line 2 = —. In case of principal axis rotation the signatures aw = +1/2 are indicated by +, respectively. 6 = 0 long axis (vy = —90°), 6 = 90° short axis (y = 0°.) The middle panel connects the two axes at the indicated frequency.
FIG. 14. Calculated single-proton Routhians. Full line z = +, dash-dotted line 2 = —. In case of principal axis rotation the signatures aw = +1/2 are indicated by +, respectively. 6 = 0 long axis (vy = —90°), 6 = 90° short axis (y = 0°.) The middle panel connects the two axes at the indicated frequency.
FIG. 15. Calculated single-neutron Routhians. The line and label -onventions are similar to those in Fig. 14.
FIG. 15. Calculated single-neutron Routhians. The line and label -onventions are similar to those in Fig. 14.
FIG. 16. (Color online) '“°Nd AJ = 1 bands D1—D8. The line type indicates the parity: full x = +, dashed 2 = —
FIG. 16. (Color online) '“°Nd AJ = 1 bands D1—D8. The line type indicates the parity: full x = +, dashed 2 = —
FIG. 17. (Color online) '4°Nd AJ = 1 bands D9-D11. The line type indicates the parity: full 7 = +, dashed x = — Band D4 decays to the 20+ isomer with a m(dg)* ® vai (t AAEF ®@ vVABGA#AX) configuration and to the 177 with a state at 6403 keV with a m(dg)* ® vhj{.(sd)~ | Band D3 is a short sequence of two transitions, which decays to states of band D4 and to the 20* isomer. We assign a 2h?(dg) ® vhiya(sd)~ (hoa fry2)" (tABEH ® vVABCG) configuration to this band, which has therefore
FIG. 17. (Color online) '4°Nd AJ = 1 bands D9-D11. The line type indicates the parity: full 7 = +, dashed x = — Band D4 decays to the 20+ isomer with a m(dg)* ® vai (t AAEF ®@ vVABGA#AX) configuration and to the 177 with a state at 6403 keV with a m(dg)* ® vhj{.(sd)~ | Band D3 is a short sequence of two transitions, which decays to states of band D4 and to the 20* isomer. We assign a 2h?(dg) ® vhiya(sd)~ (hoa fry2)" (tABEH ® vVABCG) configuration to this band, which has therefore
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