Bibliothek

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Electromagnetic and nuclear fission of238U in the reaction of 100, 500, and 1000 A·MeV208Pb with238U (1994)
    Springer
    The European physical journal 350 (1994), S. 221-227 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 25.85.-w ; 25.70.-z
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract The folding- and azimuthal-angle and velocity distributions for the238U fission fragments have been measured in reactions with 100, 500, and 1000 A·MeV208Pb. These distributions were used to decompose the fission cross section into its electromagnetic and nuclear components. The fraction of electromagnetic fission was found to be 0.16±0.07, 0.48±0.08, and 0.60±0.04, respectively. The electromagnetic fission cross section as a function of the208Pb nucleus energy is compared with theoretical predictions. The measured fission cross section from nuclear reactions (≈1.5 b) is approximately constant between 100 and 1000 A·MeV.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01289586
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Few-neutron removal from238U at relativistic energies (1995)
    Springer
    The European physical journal 352 (1995), S. 163-169 
    Details
    ISSN: 1434-601X
    Schlagwort(e): 24.30.Cz ; 25.75.+r
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract As part of a comprehensive study of uranium fragmentation at relativistic energies at the GSI projectile fragment separator, FRS, inclusive neutron-removal cross sections have been measured for severalxn channels at projectile energies of 600 and 950A MeV using targets of Al, Cu and Pb. The variation of the experimental cross sections with target nuclear charge is used to disentangle nuclear and electromagnetic contributions. The electromagnetic cross sections agree surprisingly well with a simple harmonic oscillator calculation of giant dipole resonances based on measured photonuclear cross sections and do not require an extra enhancement of the two-phonon giant dipole excitation as concluded from similar measurements with197Au.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01298903
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    The relationship between monkey dentate cerebellar nucleus activity and kinematic parameters of wrist movement (1998)
    Springer
    Experimental brain research 119 (1998), S. 179-190 
    Details
    ISSN: 1432-1106
    Schlagwort(e): Key words Cerebellum ; Dentate nucleus ; Neuronal activity ; Movement kinematics ; Monkey
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Extracellular single-unit recordings were made from cerebellar dentate neurones in two conscious monkeys trained to perform wrist flexion and extension movement tasks that produced a range of static joint positions and dynamic velocities. The experiment was designed to establish whether there is a relationship between the discharge of dentate neurones and movement kinematics. The discharge patterns of 58 “wrist-related” neurones were correlated with joint position, duration of unidirectional movement (referred to as duration of velocity) and amplitude of velocity (peak velocity). Significant (P〈0.05) correlations were found between the level of tonic discharge and static joint position in 21 of 58 (36%) neurones. Correlations between phasic discharge and at least one of the velocity variables were found in 17 of 43 (40%) neurones [7 of 43 (16%) showed a correlation between the duration of phasic excitation associated with movement and duration of velocity, 5 of 43 (12%) between the peak rate of phasic excitation and peak velocity and 10 of 43 (23%) between the number of discharges in the period of phasic excitation and peak velocity]. We conclude (for reasons outlined in the Discussion) that there is not a strong relationship between neuronal discharge and kinematic parameters of wrist movement in the dentate nucleus.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002210050332
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...