22 Result(s)

Article

The high-acceptance dielectron spectrometer HADES

HADES is a versatile magnetic spectrometer aimed at studying dielectron production in pion, proton and heavy-ion-induced collisions. Its main features include a ring imaging gas Cherenkov detector for electron...

G. Agakichiev, C. Agodi, H. Alvarez-Pol, E. Atkin… in The European Physical Journal A (2009)

Article

Measurement of charged pions in ¹²C + ¹²C collisions at 1 A GeV and 2 A GeV with HADES

We present the results of a study of charged-pion production in ¹²C + ¹²C collisions at incident beam energies of 1A GeV and 2A GeV using the HADES spectrometer at GSI. The main emphasis of the HADES program is o...

G. Agakishiev, C. Agodi, A. Balanda, G. Bellia… in The European Physical Journal A (2009)

Article

Beta decay of ⁵⁰Ni

The very neutron-deficient isotope ⁵⁰Ni was produced in fragmentation reactions between a \(650\cdot\) A MeV ⁵⁸Ni beam and a ⁹Be target. For the first time the decay of this nucl...

C. Mazzocchi, E. Badura, C. Bingham… in The European Physical Journal A - Hadrons … (2003)

Article

First evidence for the two-proton decay of ⁴⁵Fe

Decays of five ⁴⁵Fe atoms have been observed at the fragment separator of GSI. Whereas one event is consistent with the β-decay of ⁴⁵Fe accompanied by the emission of a 10 MeV proton, four decays are consistent w...

M. Pfützner, E. Badura, C. Bingham, B. Blank… in The European Physical Journal A - Hadrons … (2002)

Article

Observation of Δ⁺→ pπ⁰ decay in heavy-ion collisions

T. Matulewicz, L. Aphecetche, Y. Charbonnier… in The European Physical Journal A - Hadrons … (2000)

Article

Mass and Γ_3π0/Γ_γγ decay branching ratio of theη-meson from the p(γ, η)p reaction

Near threshold photoproduction ofη-mesons from the proton has been measured at the MAMI accelerator with the TAPS spectrometer. The mass of theη-meson was deduced from the threshold energy forη-photoproduction. T...

B. Krusche, J. Ahrens, I. Anthony, G. Anton… in Zeitschrift für Physik A Hadrons and Nuclei (1995)

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)

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

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

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

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

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

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

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

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

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

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)

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

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)