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  • 1975-1979  (3)
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Material
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Nuclear charge distributions from 4π-β measurements on mass separated fragments from235U(n th ,f) (1976)
    Springer
    The European physical journal 277 (1976), S. 71-75 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A 4π-β detector was used at the Lohengrin mass separator to measure theβ-activity of mass chains 91, 93, 94, 95, 137 and 139 produced in the thermal neutron induced fission of235U. This activity was analysed intoZ-yields. The different possible corrections were considered and applied to the data. TheZ-yields from this work are compared with the diverse existing results obtained with other methods. The need for and significance of this method to determine theZ-distribution of fission fragments of the heavy group is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01547504
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Half-lives and delayed neutron emission probabilities of short-lived Rb and Cs precursors (1979)
    Springer
    The European physical journal 290 (1979), S. 311-318 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Half-lives and delayed-neutron emission probabilities (P n ) of short-lived Rb and Cs precursors in the mass chains 94–98 and 143–147 were measured. Sources of isotope separated nuclides were obtained from the on-line mass-separator OSTIS installed at the Grenoble high-flux reactor. A newP n -value of (25.4±3.2)% is given for the (214±30) ms147Cs; theP n -values of nine alkali precursor nuclides were redetermined: (2,730±20) ms94Rb with (9.7±0.5)%, (377 ±6)ms95Rb with (8.6±0.5)%, (197±5)ms96Rb with (12.5±0.9)%, (171±4) ms97Rb with (25.2±1.8)%, (114±13)ms98Rb with (18.4±2.9)%, (1,765±30)ms143Cs with (1.74 ±0.12)%, (1,000±10)ms144Cs with (2.95±0.25)%, (616±20) ms145Cs with (12.2±0.9)%, (325±10)ms146Cs with (13.2±0.8)%. The results are compared with the existing data, and theP n -values are discussed within some simple model predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408548
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Half-lives andP n values of delayed-neutron precursors in the mass chains 85–87, 92, 135, 136 and 145 (1978)
    Springer
    The European physical journal 287 (1978), S. 45-50 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Further results are presented on half-lives and neutron emission probabilities (P n ) of short-lived delayed-neutron precursors in the mass chains 85–87, 92, 135, 136 and 145 obtained with the recoil focussing parabola-type mass separator for unslowed fission products LOHENGRIN installed at the Grenoble high-flux reactor. A newP n -value of (44±14)% is given for the (0.73±0.06)s87As; theP n -values of seven precursor nuclides have been redetermined: (1.9±0.1)s85As with (22±8)%, 0.9s86As with (10.5±2.2)%, (0.35±0.04)s92Br with (21±8)%, (1.6±0.15)s135Sb with (14±1)%, (0.9±0.1)s136Sb with (19±9)%, (17.5±0.2)s136Te with (2.0±1.0)% and 0.6s145Cs with (12.5±3.0)%. The results are compared with the existing data, and the neutron emission probabilities are discussed within a simple semi-empirical picture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408359
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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