32 Result(s)

Article

Rotational band crossings in the actinides

In the actinides bothi _13/2 protons andj _15/2 neutrons are close to the Fermi surface. At rapid rotation these high-j particles will unpair and align their orbital angular momentum along the axis of rotation givi...

R. S. Simon, F. Folkmann, Ch. Briançon… in Zeitschrift für Physik A Atoms and Nuclei (1980)

Article

Gamma-spectroscopy within the island of high-spin isomers nearN=82

A NaI sum-spectrometer combined with Ge-counters has been used to characterize the members of the island of high spin isomers nearN=82. On the basis of half lives, totalγ-decay energies and discreteγ-lines, assig...

J. Borggreen, S. Bjørnholm, O. Christensen… in Zeitschrift für Physik A Atoms and Nuclei (1980)

Chapter

Superluminal Expansion of 3C 273

Figure 1 shows hybrid maps of the core of 3C 273B at five epochs, made with arrays of 4 or 5 VLBI antennas. The maps span a period of 3.5 years. They all show a bright eastern peak and a lower-brightness exten...

T. J. Pearson, S. C. Unwin, M. H. Cohen, R. P. Linfield… in Extragalactic Radio Sources (1982)

Chapter and Conference Paper

The Darmstadt-Heidelberg-crystal-ball

V. Metag, D. Habs, K. Helmer, U. v. Helmolt… in Detectors in Heavy-Ion Reactions (1983)

Article

High-j proton and neutron alignment in the odd actinides²³⁵U and²³⁷Np

The investigation of the odd-neutron nucleus²³⁵U and odd-proton nucleus²³⁷Np provides the possibility to study separately the alignment effects in thei _13/2 proton andj _15/2 neutron intruder states in the actinid...

R. Kulessa, R. P. DeVito, H. Emling, E. Grosse… in Zeitschrift für Physik A Atoms and Nuclei (1983)

Article

Coulomb excitation of²³⁰Th

The level scheme of²³⁰Th is presented, as deduced from Coulomb excitation experiments using³²S,⁸⁴Kr and¹⁴²Nd projectiles. The ground-state band is followed up to spin (24⁺) and the octupole band up to 19⁻. A comp...

J. de Boer, Ch. Lauterbach, Ch. Mittag, F. Riess… in Il Nuovo Cimento A (1965-1970) (1984)

Chapter and Conference Paper

Radiative fusion induced by massive nuclei

In bombardments of ⁹⁰Zr, ⁹²Zr and ⁹⁴Mo with ⁹⁰Zr ions at energies near the Coulomb barrier, radiative fusion has been observed where the compound nuclei do not evaporate nucleons but emit only γ radiation. The de...

K. -H. Schmidt, R. S. Simon, J. -G. Keller… in Fusion Reactions Below the Coulomb Barrier (1985)

Article

Spectroscopy of²²¹Th

A positive and a negative parity band in²²¹Th have been investigated via the²⁰⁸Pb(¹⁶O, 3n)²²¹Th reaction. Strong E1 transitions compete with stretched E2 transitions deexciting levels of alternating parity. The m...

M. Dahlinger, E. Hanelt, E. Kankeleit… in Zeitschrift für Physik A Atoms and Nuclei (1985)

Article

Evidence for nuclear shape coexistence in¹⁸⁰Hg

Theγ decay in the radiative fusion reaction⁹⁰Zr+⁹⁰Zr→¹⁸⁰Hg+xγ has been observed in an array of NaI detectors. States up to 6⁺ in the yrast sequence of¹⁸⁰Hg are tentatively assigned and suggest the coexistence of ...

R. S. Simon, K. -H. Schmidt, F. P. Heßberger… in Zeitschrift für Physik A Atomic Nuclei (1986)

Article

In-beam spectroscopy of²²⁴Th

A rotational band with states of alternating parity has been populated in²²⁴Th via the²⁰⁸Pb(¹⁸O, 2n) reaction. Spins up to I^π=10^>+ (11⁻) are identified. Stretched El and E2 transitions compete in the deexcitation...

B. Schwartz, Ch. Ender, D. Habs, D. Schwalm… in Zeitschrift für Physik A Atomic Nuclei (1986)

Article

Coulomb excitation of²³⁰Th with³²S,⁸⁴Kr and¹⁴²Nd projectiles

The Coulomb excitation measurements for the²³⁰Th nucleus with³²S,⁸⁴Kr and¹⁴²Nd projectiles are presented. The use of different projectiles allowed us to get information in the ground-state band and side bands. Th...

R. Kulessa, Ch. Briançon, A. Lefebvre… in Zeitschrift für Physik A Atomic Nuclei (1989)

Article

Measurements of transient magnetic fields on single-electron Ni-ions

Measurements were performed to determine the transient magnetic field assoclated with polarized is electrons of highly-stripped Ni ions traversing a ferromagnetic Fe layer. Partiele γ angular correlations and ...

K. -H. Speidel, J. Cub, M. Knopp, H. -J. Simonis… in Hyperfine Interactions (1990)

Article

Neutral pion production at 350 MeV/u in the system²⁰Ne +²⁷Al

π⁰ -production probability of (9± 2)· 10^{− 3} per²⁰Ne+Al reaction has been measured at 350 MeV/u using the Two Arm Photon Spectrometer TAPS. This yield is consistent with an interpolation of published π-production ...

F. D. Berg, M. Pfeiffer, O. Schwalb… in Zeitschrift für Physik A Atomic Nuclei (1990)

Article

Measurement ofg-factors in¹⁶⁰Yb by aγ-γ coincidence technique

Aγ-γ coincidence technique has been developed forg-factor measurements of short-lived nuclear states. The method involvesγ-detection in 4π geometry as well as transient magnetic fields and the recoil-distance tec...

E. Lubkiewicz, H. Emling, H. Grein, R. Kulessa… in Zeitschrift für Physik A Atomic Nuclei (1990)

Article

Decay of the compound nucleus¹⁷⁹Au formed in the cold fusion reaction⁹⁰Zr+⁸⁹Y

For the compound nucleus¹⁷⁹Au formed at an excitation energy of 26 MeV in the fusion reaction⁹⁰Zr+⁸⁹Y, the energy spectra of promptly emitted protons,α particles andγ rays were measured in concidence with the eva...

U. Gollerthan, T. Brohm, H. -G. Clerc… in Zeitschrift für Physik A Hadrons and Nuclei (1991)

Article

Large electron polarization of H-like²⁰Ne-ions traversing gd foils at very high velocities

It is shown that transient magnetic fields in Gd-host for²⁰Ne ions at a mean velocity of 12.5v₀(v₀=c/137), considerably beyond the Bohr velocity of 1s electrons of Ne ions (v_1s=10v₀), are dominated by the Fermi c...

K. -H. Speidel, J. Cub, U. Reuter, F. Passek… in Zeitschrift für Physik A Hadrons and Nuclei (1991)

Article

Neutral meson production in relativistic heavy ion collisions

The production ofπ ⁰ andη mesons has been studied in the reactions²⁰Ne +Al at 350 MeV/u and⁴⁰Ar + Ca at 1.0 GeV/u. Rapidity distributions and transverse momentum spectra have been measured and are compared to the...

F. D. Berg, A. Boonstra, H. P. Braak… in Zeitschrift für Physik A Hadrons and Nuclei (1991)

Article

Total decay-energy measurement in the fusion reactions⁹⁰Zr(⁸⁹Y,p)¹⁷⁸Pt and⁹⁰Zr(⁸⁹Y, α)¹⁷⁵Ir

In the fusion reactions⁹⁰Zr(⁸⁹Y,p)¹⁷⁸Pt and⁹⁰Zr(⁸⁹Y,α)¹⁷⁵Ir the sum energy of all emittedγ rays as well as the energy of the promptly emitted charged particle were measured. From these data the mass-excess values...

T. Brohm, H. -G. Clerc, U. Gollerthan… in Zeitschrift für Physik A Hadrons and Nuclei (1991)

Article

β ⁺-endpoint measurements near¹⁰⁰Sn and¹⁴⁶Gd

With a summation-free β⁺-endpoint spectrometer the β⁺-decay energies of¹⁰⁴Sn,¹⁴⁷Tb,^{148, 149}Dy,¹⁴⁹Ho,¹⁵⁰Er, and¹⁵¹Tm were remeasured with improved accuracy. Combined with known proton and alpha decay energies, the...

H. Keller, R. Kirchner, O. Klepper… in Zeitschrift für Physik A Hadrons and Nuclei (1991)

Article

Evidence for a two-phonon octupole vibrational state in²⁰⁸Pb

Collective properties of^206,208Pb have been investigated with gamma-ray spectroscopy using nuclear and electromagnetic excitation by²⁰⁸Pb projectiles. From the measurement of particle-particle-γ and particle-part...

H. J. Wollersheim, P. Egelhof, H. Emling… in Zeitschrift für Physik A Hadrons and Nuclei (1992)