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Identification of the genes conferring resistance to European corn borer (ECB) [Ostrinia nubilalis (Hubner)] is an important step in understanding how resistance is expressed and whether different sources of maize (Zea mays L.) germplasm can be combined to enhance protection. The locations of genes for resistance to ECB tunneling have been reported but are inconsistent across studies. The objectives of this study were to map and characterize quantitative trait loci (QTL) for resistance to tunneling in De811 and compare these with related studies and with QTL for anthesis and ear height. Inbred De811 (resistant) was crossed to susceptible inbred B73 to produce a population of 147 F 3 lines. The population was artificially infested and evaluated in three environments. The F 3 lines were genotyped at 88 restriction fragment length polymorphism (RFLP) loci to facilitate QTL mapping with composite interval mapping (CIM). Seven QTL for ECB tunneling were detected on chromosomes 1, 3, 4, 5, and 8, associated with 42% of the phenotypic variation. The F, exhibits partial dominance for resistance but only one QTL with dominant gene action was observed. An F 3 population of B73 x B52 that was evaluated in the same environments facilitated comparisons of genetic heterogeneity between inbreds De811 and B52. Only one QTL for tunneling was common between the populations, indicating that the two inbreds may contribute different genes for resistance in crosses with B73. This information could be useful for combining the favorable alleles of De811 and B52.

The recently commissioned Recoil Mass Spectrometer (RMS) at the Holifield Radioactive Ion Beam Facility (HRIBF) is described. Consisting of a momentum separator followed by an E-D-E Rochester-type mass spectrometer, the RMS is the centerpiece of the nuclear structure endstation at the HRIBF. Designed to transport ions with rigidities near K = 100, the RMS has acceptances of +/- 10% in energy and +/- 4.9% in mass-to-charge ratio. Recent experimental results are used to illustrate the detection capabilities of the RMS, which is compatible with many detectors and devices. (C) 2000 Elsevier Science B.V. All rights reserved.

An excited well-deformed rotational band has been observed in the N = Z odd-odd nucleus Cu-58. The first excited state in this band decays via gamma emission to the spherical states associated with the first minimum in the potential, thus providing for its unambiguous assignment to Cu-58. I, contrast, its bandhead decays via emission of a prompt 2.4(1) MeV proton to an excited state in the daughter nucleus Ni-57. This is the first observation of proton decay from states associated with a deformed secondary minimum in the potential. Self-consistent Hartree-Fock calculations reproduce well both the large collectivity of this band and the general trend of its moment of inertia.

High-spin states of a number of nuclei near Ni-56 have been studied by means of the Si-28(Ar-36,x alpha ypzn) reaction. The GAMMASPHERE array in conjunction with light charged particle and neutron detectors were used to identify and cleanly select the fusion-evaporation products. In addition to significantly extending the level schemes of many previously known N = Z nuclei from Fe-52 to Cu-58, excited states in the one-neutron-hole nucleus Ni-55 and high-spin rotational bands in the vicinity of the doubly-magic Ni-56 have been established for the first time. Spherical-fp shell model and cranked Hartree-Fock calculations employing several Skyrme-type effective interactions have been used to interpret these data. The calculated moments of inertia of the rotational bands show considerable sensitivity to the details of the effective interactions.

Lifetimes of a superdeformed band in Sr-82 were measured with the centroid shift method. The measured average quadrupole moment of this band corresponds to a quadrupole deformation of beta(2) approximate to 0.49, which is slightly smaller than both the theoretical prediction, and the measured deformation of the SD band in the neighboring isotone Zr-84. Lifetimes of high spin states of three normally deformed rotational bands in Sr-82 were also measured with the Doppler shift attenuation method technique. The quadrupole moments of these normally deformed bands show a decrease at the highest spins, supporting the predicted band terminations.

High-spin states in {sup 70}As were populated using the {sup 58}Ni ({sup 16}O, 3pn) reaction at 70 MeV energy. Lifetime measurements of the 11{sup (+)}{r_arrow}9{sup (+)} 980.7keV and (13{sup +}){r_arrow}11{sup (+)}1342.7keV transitions using the Doppler-shift attenuation method determined that both are enhanced E2 transitions. This measurement indicates the onset of deformation with increasing spin in {sup 70}As, as has been seen in neighboring nuclei. {copyright} {ital 1997} {ital The American Physical Society}

An experiment was performed with the Gammasphere Ge-detector array, and the Microball charged particle detector, to search for transitions involved in the decay from the yrast superdeformed band in Eu-143. Sum spectra in coincidence with single, double, and triple gates on SD transitions were produced to search for previously reported two-step links between the superdeformed and the near-yrast ND levels. The sum spectra contained no evidence of peaks corresponding to sums of two-step linking transitions. Several discrete gamma rays were observed in coincidence with the yrast SD band. One previously reported single-step transition at 3361 keV was confirmed to decay out of the SD band.

Excited states in ${}^{208}$Pb have been studied by measuring $\ensuremath{\gamma}$ rays in time coincidence with reaction charged particles. ${}^{208}$Pb states were produced with both the ${}^{207}$Pb${(d,p)}^{208}$Pb and ${}^{209}$Bi$(t,\ensuremath{\alpha})$${}^{208}$Pb reactions. The energy resolution of the particle spectra of 100 keV allowed a rough determination of level excitation, which then was determined with high resolution from the coincident $\ensuremath{\gamma}$ decay measured in Ge detectors. Many new $\ensuremath{\gamma}$ transitions have been found and previously unresolved multiplets of states resolved. The data give spectroscopic factors for neutron transfer and proton pickup. Spins and parities of levels could be deduced from their $\ensuremath{\gamma}$ decays. A least squares fit of all $\ensuremath{\gamma}$ energies gave very precise (0.1 keV) level energies. All states predicted by the shell model below 4.6 MeV are now found and their spins determined unambiguously.

Lifetime measurements on the i{sub 13/2} band built on the proton configuration 1/2{sup +}[660] in {sup 173}Re have been carried out by the Doppler-broadened line shape method with the use of the GAMMASPHERE array in an early-implementation arrangement. Lifetimes of the stretched E2 transitions from states of spin 41/2{sup +}{endash}69/2{sup +} in this band were measured, and the transition quadrupole moments calculated from these lifetimes are consistent (average Q{sub t}=8.1{plus_minus}0.5eb) with a large and near-constant deformation ({beta}{sub 2}{approx}0.29) over the frequency range of {h_bar}{omega}=0.29{endash}0.47 MeV. This result attests to the strong deformation-driving effect of the intruder {pi}i{sub 13/2} orbital when it lies just above the Fermi surface. From thin-target measurements, it was possible to add three new levels to this band and to determine that the experimental aligned angular momenta gradually evolve over a large frequency range and level off with a total gain characteristic of alignment by i{sub 13/2} neutrons. Calculations carried out for diabatic configurations give a satisfactory accounting of the alignment gain. However, because of the large interaction between crossing bands, a more meaningful description of the deformation pattern in this band was achieved through calculations of the spin-adiabatic type. Both calculations are discussed and compared withmore » the experimental results. {copyright} {ital 1997} {ital The American Physical Society}« less

A search was undertaken to look for evidence of hyperdeformation in Gd-146,Gd-147. Three experiments employing Gammasphere for gamma-ray detection coupled with the Microball for channel selection via charged particle detection were carried out with increasing detection sensitivity and statistics. No definitive evidence for band structures that could be assigned to hyperdeformation could be found. Candidates previously reported are shown not to have properties consistent with a band structure.

Four bands of enhanced dipole transitions, with weak crossovers, have been observed in Pb-195. Three of these bands are connected to the spherical levels. in addition, the spherical level scheme ha ...

Three experiments using the (174) Yb(Mg-25,5n)Pb-194 reaction have been undertaken at the Early Implementation of Gammasphere to study the decay of known superdeformed states in Pb-194. A single di ...

The decay of the superdeformed (SD) band in Nd-135 was studied with the early implementation of gamma-sphere. The results suggest that the SD band ''terminates'' at spin 25/2. This termination is e ...

We have studied via in-beam gamma-ray spectroscopy Po-196 and Po-198, which are the first neutron-deficient Po isotopes to exhibit a collective low-lying structure. The ratios of yrast state energi ...

The recently discovered superdeformed band in one of the strontium isotopes has been identified as belonging to 83Sr from a study with the Gammasphere array and the Microball charged-particle detector system. From its decay pattern, a spin of (81 ± 2) 2 h is deduced for the highest level of this band. Evidence for very fast transition rates and agreement of the characteristics of this band with the theoretical predictions establish the yrast superdeformed nature of this band in 83Sr.

A new superdeformed band has been identified in {sup 191}Hg bringing the total number of bands observed in this nucleus to four. The new band has properties similar to those of a superdeformed band reported recently in {sup 193}Hg. Both bands are believed to be built on the unfavored signature of the {ital j}{sub 15/2} intruder configuration. Comparisons between the data and cranked Woods-Saxon calculations highlight the strengths and weaknesses of theory in describing high-{ital N} orbitals at large deformation.

Four new superdeformed bands have been observed in $^{195}\mathrm{Pb}$, the first time superdeformation has been observed in an odd-A Pb nucleus. Two of the bands have a dynamic moment of inertia that is nearly constant as a function of \ensuremath{\Elzxh}\ensuremath{\omega}. This is the first time that bands with such behavior have been observed in an odd-A nucleus in the A\ensuremath{\approxeq}190 region and it is interpreted as the result of the blocking of the alignment of neutron pairs.

Two new superdeformed (SD) bands in Dy-153, in addition to the three previously observed, have been studied with the GAMMASPHERE detector array. Assignments to single-neutron orbits in the SD potential are made based on the band properties. Evidence for a band interaction at very high spins, possibly involving the first N = 7 proton intruder orbital, is observed in the strongest populated SD band. Furthermore, evidence far a Delta I = 2 staggering is also found in this SD band.

Six superdeformed bands have been observed in [sup 193]Pb following the [sup 174]Yb([sup 24]Mg,5[ital n]) reaction at a beam energy of 131 MeV. The in-beam [gamma] rays were detected with GAMMASPHERE early implementation. Two of the bands have dynamic moments of inertia which have an anomalously low increase with rotational frequency, and are interpreted as the favored and unfavored signature components of the [ital N]=7 neutron orbital. The other four bands have increasing dynamic moments of inertia typical of superdeformed bands in the [ital A]=190 region, and are interpreted as two pairs of signature partner bands based on high-[ital K] quasineutron excitations. The effects of the intruder [ital N]=7 neutron orbital on the superdeformed rotational characteristics are discussed.

A method for correcting target-thickness-induced Doppler broadening in gamma-ray spectra from weakly populated, very short-lived (femtosecond) states is presented. The method is illustrated by an a ...

A new superdeformed band with an intensity [similar to]5% relative to the yrast superdeformed band has been observed in [sup 194]Pb. Evidence for a second new band corresponding to the signature partner is also presented. These bands were observed with GAMMASPHERE early implementation via the [sup 174]Yb([sup 25]Mg, 5[ital n]) reaction at a beam energy of 130 MeV. The rotational characteristics of the new bands suggest an interpretation involving particle-hole excitations in the doubly-magic [sup 194]Pb superdeformed core. The results are compared to neighboring nuclei and recent theoretical calculations, and possible configurations are suggested.

High-K bands have been observed in the Yb-166,Yb-167,Yb-168 isotopes following the Sn-124(Ca-48,xn gamma) reaction. The nu h(11/2) bend in Yb-167 has been extended to higher spins. The high-K bands ...

The [gamma] rays associated with the decay of [sup 68]Ga in equilibrium with [sup 68]Ge have been studied using the 20-element High Energy Resolution Array (HERA) facility. Five new transitions were observed along with the known ones from earlier works. The [ital E]2/[ital M]1 mixing ratios for two of these new transitions were obtained by [gamma]-[gamma]([theta]) techniques.

Two new features of superdeformed (SD) bands in the A almost-equal-to 190 region emerge from a study of Hg-194 with the Gammasphere detector array. A decrease of the dynamic moment of inertia is observed for rotational frequencies HBARomega greater-than-or-equal-to 0.4 MeV, confirming long standing expectations based on mean field calculations with pairing. Evidence for a small staggering in the SD transition energies is also observed, suggesting the presence of terms with fourfold symmetry in the SD Hamiltonian.

We have performed a search for resonant states in low energy {ital e}{sup +}{ital e{minus}} scattering through their decay to multiphoton final states using {ital e}{sup +} from {sup 68}Ga sources and a Pb absorber. We obtained energy-sum and invariant mass spectra of coincident 2{gamma} and 3{gamma} events using the 20-element High Energy-Resolution Array (HERA) facility. No evidence for resonant states was found, and upper limits for the partial decay widths of such resonances were established in the energy range from 1.1 to 1.8 MeV.

Nuclear level lifetimes have been measured in two superdeformed bands in $^{194}\mathrm{Hg}$ using the Doppler-shift attenuation method. Average transition quadrupole moments derived from the lifetimes of an excited and yrast superdeformed bands are ${\mathit{Q}}_{\mathit{t}}$=17.6(30) and 17.2(20)eb, respectively. The Doppler shifts of the excited band relative to the yrast band indicate a slight difference in quadrupole moments [+4(5)%], assuming similar side feeding..ul2 These results imply that the second well is stable and rigid with respect to the particle excitation responsible for this excited band.

Lifetimes of states in the regular \ensuremath{\Delta}I=1 band in $^{197}\mathrm{Pb}$ have been measured with the Doppler-shift attenuation method. Excited states in $^{197}\mathrm{Pb}$ were populated using the $^{154}\mathrm{Sm}$${(}^{48}$Ca, 5n) reaction at ${\mathit{E}}_{\mathit{b}}$=210 MeV. The target consisted of 1 mg/${\mathrm{cm}}^{2}$ $^{154}\mathrm{Sm}$ evaporated onto a 10 mg/${\mathrm{cm}}^{2}$ Au backing. Discernible lineshapes for \ensuremath{\gamma} rays in the energy range 300${\mathit{E}}_{\ensuremath{\gamma}}$500 keV in the regular band were observed in a spectroscopic study with the 20 Ge-detector array, HERA. Level lifetimes were obtained from a lineshape analysis. Averaged reduced transition strengths, B(M1)\ensuremath{\sim}1.7 W.u. and B(E2)\ensuremath{\sim}18 W.u., are deduced and these are compared with theoretical predictions for the suggested configuration of this band.

A superdeformed band has been observed for the first time in an Au isotope. The reaction used was B-11 + W-186, demonstrating that very light ions can be used to populate superdeformed (SD) bands a ...

High-spin states in the nucleus [sup 196]Hg were populated in the reaction [sup 192]Os([sup 9]Be,5[ital n]) at a beam energy of 65 MeV. A regular rotational-like [Delta][ital I]=1 band has been observed up to an excitation energy of [ital E][sup *][approx]8.7 MeV and spin [ital I][approx]30[h bar]. This is the second observation of a band of this character in a mercury isotope. The experimental results are compared with mean field calculations and semiclassical estimates based on the Doenau-Frauendorf formalism. The mercury bands show significantly lower [ital B]([ital M]1)/[ital B]([ital E]2) branching ratios as compared with similar bands in light lead nuclei. This difference may be more readily explained by a difference in single-particle structure rather than by large differences in deformation between the lead and mercury configurations.

Reports of recent experiments have included observations of regular and irregular bands in neutron deficient Pb isotopes with A =194, 196–201. The bands are populated strongly in (HI, xn ) reactions. The shared characteristics of the bands include: 1) bandhead energies of a few MeV; 2) high bandhead spin; 3) large alignments; 4) small dynamic moments of inertia, and 5) strong L =1 transitions and weaker L =2 crossover transitions, with B( M 1) B( E 2) ≈ 20 μ 2 e 2 b 2 . Lifetimes of band members in the 198 Pb regular band are B (M1) ≈ 1 W.u. and B (E2) ≈ 12 W.u. (with large errors). These observations are consistent with an interpretation of the regular structures as collective oblate bands with both proton and neutron excitations involved; the closed proton shell at Z =82 is broken, and coupled to v( i 13 2 ) −n excitations. The irregular structures may correspond to triaxial shapes, with similar orbits involved. A similar structure has been also found in 193 Hg.

Two-way decay has been observed between superdeformed bands in $^{193}\mathrm{Hg}$. It is proposed the decays have M1 multipolarity and connect signature partner bands. Candidates for the two-way gamma decays connecting superdeformed bands are observed for the first time.

Evidence for collective oblate behavior in [sup 196]Pb is presented. One irregular and two regular bands of [ital M]1 transitions have been observed following the [sup 170]Er([sup 30]Si,4[ital n]) and [sup 176]Yb([sup 26]Mg,6[ital n]) reactions. Transitions linking the most intense regular band to the low-lying negative-parity yrast levels are observed, establishing excitation energies, spins, and probable parities of the band members. In contrast, no such transitions have been found for the irregular band and the weaker regular band. The bands are interpreted as corresponding to collective oblate rotation, arising mainly from deformation-aligned high-[ital j], shape-driving quasiproton excitations across the [ital Z]=82 shell gap, coupled to rotation-aligned quasineutrons.

The nucleus $^{193}\mathrm{Hg}$ was populated in the reaction $^{176}\mathrm{Yb}$${(}^{22}$Ne,5n) at the incident energy E${(}^{22}$Ne)=110 MeV. Reaction \ensuremath{\gamma} rays were detected with a Ge-detector array. A new ``collective'' structure was observed at ${\mathit{E}}_{\mathit{x}}$g5.7 MeV. The states of the structure extend from I\ensuremath{\ge}47/2 to I+10, and they decay with competing dipole and quadrupole transitions. The structure is populated very strongly in this reaction: the lowest member is produced with \ensuremath{\sim}20% of the $^{193}\mathrm{Hg}$ cross section.

Transition energies of 25 superdeformed (SD) bands in 13 nuclei of the A=194 region were fitted by the power-series expansion of I in odd powers of ${\mathit{E}}_{\ensuremath{\gamma}}$/2, \ensuremath{\Elzxh}(I+1/2)=2\ensuremath{\alpha}\ensuremath{\omega}+4/3\ensuremath{\beta}${\mathrm{\ensuremath{\omega}}}^{3}$, where ${\mathit{E}}_{\ensuremath{\gamma}}$/2=\ensuremath{\Elzxh}\ensuremath{\omega}, and by the expression for transition energy, ${\mathit{E}}_{\ensuremath{\gamma}}$=E(I+2)-E(I), where E(I)=AI(I+1) +B[I(I+1)${]}^{2}$+C[I(I+1)${]}^{3}$. Results are generally similar, and level spins for these SD bands are given based on expectations of rotational model behavior.

Evidence for collective behavior in the high-spin region of lead nuclei is provided by the observation of two collective structures in $^{197}\mathrm{Pb}$. One of these bands is interpreted as an oblate collective structure built on oblate proton and possibly neutron states. A second more irregular band is suggested to be most likely a triaxial rotational band. Neutron and proton configurations for these bands are suggested from the results of quasiparticle Routhians and total Routhians surface calculations. A partial level scheme up to I\ensuremath{\approxeq}69/2 and ${\mathit{E}}_{\mathit{x}}$\ensuremath{\approxeq}8 MeV is presented.

A γ-ray cascade in 191Hg of 12 members with average energy spacing 37 keV and Qt= 18(3)eb was reported by Moore and co-workers in 1989. This was the first report of very elongated nuclei (superdeformation) in this mass region. Since then, some 25 γ-ray cascades have been observed in 11 (slightly neutron deficient) Hg, Pb and Tl nuclei. Our collaboration has investigated 7 of these nuclei. The bands have similar dynamic moments-of-inertia. Some nuclei exhibit multiple bands, and the backbending phenomenon has been observed. Level spins can be obtained from comparison of transition energies to rotational model formulas. Selected bands (in different nuclei) have equal transition energies (within 0.1%). Alignment in integer multiples of has been observed. Properties of these bands will be described.

Four new superdeformed bands have been observed in {sup 194}Tl, in addition to the two already reported. These six bands consist of three signature-partner pairs, whose energies and spacings closely resemble those in the two superdeformed bands recently reported in {sup 193}Tl. The transition-energy similarities and angular momentum alignments of these bands are discussed.

Two rotational bands, with energy spacings characteristic of superdeformed shapes, have been observed following bombardment of150Nd with48Ca. The more intensively populated band consists of 18 transitions and is assigned to194Hg. The depopulation of this band occurs around spin 10. The second band, consisting of at least 16 transitions, was populated less strongly and is tentatively assigned to194Hg also. The lowest level in this band is assigned spin 8. The energy differences between transitions for both bands decrease from ∼40 keV at low rotational frequencies to ∼30 keV at the highest observed frequencies. The moments of inertia of the bands are similar to those of the two previously observed superdeformed bands in191,192Hg. The similarities and differences of the four known bands in the mercury region are discussed.

A \ensuremath{\gamma}-ray cascade in $^{192}\mathrm{Hg}$ consisting of seventeen members is reported. The transition spacing is characteristic of a superdeformed band, and we propose it to be the second instance of superdeformation in the Hg region. We find the lowest spin in the band likely to be 8\ensuremath{\Elzxh} using a new method for obtaining spins in some superdeformed nuclei.

We have examined the suggestion that an M0 transition occurs between the 2819.6-keV ${0}^{\mathrm{\ensuremath{-}}}$ level of $^{170}\mathrm{Yb}$ and the ${0}^{+}$ ground state by internal-conversion electron emission. Gamma rays, internal-conversion electrons, and internal ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ pairs were detected from the ${\mathrm{\ensuremath{\beta}}}^{+}$ and electron capture decay of two-day $^{170}\mathrm{Lu}$ (${0}^{+}$). At an upper limit of 2\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}8}$ electron per $^{170}\mathrm{Lu}$ decay, no evidence was obtained for M0 decay of the 2819.6-keV level of $^{170}\mathrm{Yb}$ by single-electron emission.

Evidence for collective behavior in the high-spin region of neutron deficient lead nuclei is provided by the observation of four collective structures in 197,198 Pb. These bands consist of strong dipole (M1) transitions with a few E2 crossover transitions observed. The transition energies of three of these bands show a rather regular behavior while those of one of them show an irregular behavior. We interpret the regular bands as oblate collective bands built on oblate proton and neutron states, whereas the irregular band might either be built on a state with very small oblate deformation, or be a triaxial rotational band. A lifetime measurement (DSAM) has been done for the regular bands in 198 Pb. Neutron and proton configurations for the bands are suggested from the

The nucleus As-69 was Studied using the Ca-40(S-32,3p)As-69 reaction at a beam energy of 105 MeV. An extension of the band built on the g(9/2) orbital was observed to exhibit a band crossing at a r ...

High-spin states were populated in Sr-80 With the reaction Ni-58(Si-28,alpha 2p), using a 130 MeV Si-28 beam from the 88-Inch Cyclotron at LBNL. Gamma rays were detected with Gammasphere. and evaporated alphas and protons were detected with the Microball. The level scheme has been extended, and angular distributions of many of the transitions have been measured. A portion of the data was taken using a backed target, allowing lifetime measurements. No evidence for band termination was found in the spin range studied, but a cranking model analysis indicates possible shape evolution at higher spin.

Thanks to an experimentation, this research studies nonconscious effects of two broadcast sponsorships on attitude toward a new brand. This brand sponsors two quasi-identical broadcasts: there is almost only one difference between them, their emotional content. Effects are recorded with indirect measures. The impact of humorous broadcast sponsorship (with two exposures) on brand is manifest and positive. The sad broadcast has no influence: the intensity of emotions has produced irrelevant thoughts which prevent the processing of the closing credits sponsor billboard. Results are in line with the new familiarity-misattribution model. No automatic transfer of semantic attributes from broadcasting to brand image is observed.

The recoil mass spectrometer at the Holifield Radioactive Ion Beam Facility is currently undergoing commissioning tests. This new spectrometer is designed to transmit ions with rigidities of K = 100 resulting from fusion-evaporation reactions using inverse-kinematics. The device consists of two sections: a momentum separator to provide beam rejection and a mass separator for product identification. Using normal-kinematic and symmetric reactions, the commissioning tests have shown that the A/Q acceptance is almost {+-}5%, the energy acceptance is approximately {+-}12%, and there has been little, if any, primary beam observed on the focal plane. Commissioning tests are presently underway with reactions using inverse-kinematics.

High angular momentum states in {sup 195{minus}197}Bi are populated in two reactions: {sup 183}W({sup 19}F,{ital xn}){sup 202{minus}{ital x}}Bi and {sup 181}Ta({sup 20}Ne,{ital xn}){sup 201{minus}{ital x}}Bi at beam energies of 108 and 123 MeV, respectively. Gamma rays were detected using the Gammasphere array. Three weakly populated rotational sequences have been found. They each have properties characteristic of other superdeformed bands in this mass region. On the basis of cross-bombardment information we believe that one band belongs to each of {sup 195}Bi, {sup 196}Bi, and {sup 197}Bi. The properties of the bands in the odd-Bi nuclei are best reproduced if the odd proton occupies the favored signature of the [651]1/2 orbital, while the band in {sup 196}Bi has this same proton configuration coupled to an additional {ital N}=7 ({ital j}{sub 15/2}) neutron. The relative behavior of the @F {ital I}{sup (2)} moments of inertia can be qualitatively understood in terms of Pauli-blocking effects. {copyright} {ital 1996 The American Physical Society.}