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  • 1990-1994  (5)
  • 1980-1984  (10)
  • 1970-1974  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    The level scheme of91Tc and theβ decay of91Ru(9/2+) (1983)
    Springer
    The European physical journal 314 (1983), S. 135-142 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level scheme of91Tc has been studied by means of in-beamγ-ray spectroscopy in the irradiations of58Ni and54Fe targets by40Ca beams from the Munich MP tandem and the heavy ion post accelerator. A large number of positive as well as of negative parity yrast-levels with excitation energies up to 8 MeV has been established. The level scheme of91Tc has been compared with shell model claculations and a good agreement for all identified levels has been found. In parallel investigations of the residual activities of the reaction40Ca→54Fe, theβ decay of the (9/2+ ground) state of91Ru has been investigated. Aβ decay scheme of91Ru(9/2+) has been established. The half-life of91Ru(9/2+) has been measured to be 9±1 s.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01879871
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  • 2
    Electronic Resource
    Electronic Resource
    The decay of78Rb and the level scheme of78Kr (1972)
    Springer
    The European physical journal 256 (1972), S. 243-252 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level scheme of78Kr has been studied with the techniques of γ ray spectroscopy: decay spectra of78Rb produced by the reactions64Zn(16O,pn) and65Cu(16O,3n) have been measured; in-beam γγ coincidences have been taken during the irradiation of64Zn with16O ions; and an angular distribution measurement of γ rays from the reaction64Ni(16O, 2n)78Kr has been performed. Fifteen excited states in78Kr have been observed and spins have been proposed for most of these levels. A78Rb decay with a half-life of 17.5 ± 2 min has been found in addition to the previously known 6.0 ±0.2 min decay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01392097
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  • 3
    Electronic Resource
    Electronic Resource
    Investigation of neutron deficient nuclei in the region 28〈N, Z 〈50 with the help of heavy ion compound reactions (1974)
    Springer
    The European physical journal 268 (1974), S. 267-288 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In-beamγ ray spectroscopy withγ singles spectra,γγ coincidences andγ ray angular distributions has been performed with several target-projectile combinations:natCa +32S,natCa +40Ca,54Fe +14N,58Ni +12C,58Ni +14N,66Zn +16O,68Zn +16O. Level schemes of66Ge,68Ge,69As,70Se,74Kr,80Sr and82Sr have been deduced. The following level energies and spin-parity assignments have been found:66Ge: 957.4 keV, 2+; 1693.7; 2174.7, (4+); 3685.7; 4207.5;68Ge: 1015.8, 2+; 1777.9, 2+; 2267.9, 4+; 2428.8, 3(+); 2649.1, 3−; 3582.3, (5−); 3649.3, (5−); 3696.2, (6+); 3883.3, (6−); 4054.4, (7−); 4454.6; 4837.3;69As: 98.2; 164.6;789.6;863.2; 1306;2160;2210.4;2831.5;3258.3;3263.5;3991.1;5195.7;70Se: 945.4, 2+; 1600.9; 2039.4, (4+);74Kr: 455.7, 2+; 1013.5, (4+); 1781.5;80Sr: 385.4, 2+; 980.2, (4+); 1763.2, (6+);82Sr: 573.4, 2+; 1328.5,(4+); 2229.6,(6+). γ ray activity spectra have been measured after the bombardment of natural Ca with32S. The half-life of the new isotope69Se has been found to be 27±3 sec. Recoil distance Doppler-shift measurements have been performed with the reactions62,64Ni,66zn(16O, 2n)76, 78 Kr,80Sr. The following half-lives have been determined:76Kr: 423.8 keV, 2+, 37±5 psec; 1034.2,4+, 5.7±1.6;78Kr: 455.3, 2+, 25±3; 1120.0, 4+, 3.8±1;80Sr: 385.4, 2+, 44±6. The energy and half-life systematics of the first excited state of even-even nuclei suggest a maximum of nuclear deformation in the region 28≦N, Z≦50 near 38 76 Sr38 or 40 78 Zr38.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01669462
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  • 4
    Electronic Resource
    Electronic Resource
    Very proton rich nuclei withN≈82 (1982)
    Springer
    The European physical journal 306 (1982), S. 211-222 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Postaccelerated58Ni and60Ni beams from the Munich MP tandem have been used to study the compound reactions58Ni→93Nb,92Mo,94Mo and60Ni→92Mo. The final nuclei148Er,150Er and147Ho have been investigated with in-beamγ-spectroscopic methods, such as excitation functions,γγ coincidences, bunched-beam and pulsed-beam techniques. Level schemes of148Er,150Er and147Ho have been established with the following level energies, spins, parities and half-lives:148Er: 646.6 keV 2+; 1,524.0(4+); 2,254.3(5−); 2,526.9(6+); 2,537.3(7−), 2,706.0(7−, 8−); 2,784.4(8+); 2,915.5(10+) 13±3 μs150Er: 1,578.9 keV 2+; 1,786.4 3−; 2,261.2(5−); 2,634.1(7−); 2,734.3(8+); 2,798.3(10+) 2.7±0.2 us; 4,001.9; 4,491.8; 4,886.0; 5,222.7147Ho: 765.4; 1,737.2; 2,355; 2,656.6 The level scheme of150Er has been discussed in the framework of the seniority scheme. Perfect agreement with the experiment has been found for the predictions of this scheme for the half-lives of 10+ states inN=82 isotones. This is the first nuclear region where the predictions of the seniority scheme have been observed without strong perturbation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415123
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  • 5
    Electronic Resource
    Electronic Resource
    Investigations of very neutron-deficient isotopes below100Sn in40Ca-induced reactions (1982)
    Springer
    The European physical journal 308 (1982), S. 21-31 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Very neutron-deficient isotopes of rhodium, palladium, silver, cadmium and indium in theN=50 region were studied at the GSI on-line mass separator following bombardment of58, 60, 62Ni and63, 65Cu targets with 4.0 MeV/u ions of40Ca. The known properties of the β-delayed proton precursor95m Pd were confirmed, but a search for direct proton decay of95m Ag was not successful. Beta-delayed proton activities observed at mass-numbers 94, 96, 97 and 100 were assigned to the precursors94Rh(66±14 s),96Ag(5.1±0.4s),97Cd(3 −2 +4 s) and100In. In addition,94Pd(9.0±0.5 s) was identified from β-γ-X studies. Individual decay schemes of95m96Pd and96, 98Ag are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415845
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  • 6
    Electronic Resource
    Electronic Resource
    Determination of erosion rates with cosmic ray produced36Cl (1991)
    Springer
    The European physical journal 341 (1991), S. 117-119 
    Details
    ISSN: 1434-601X
    Keywords: 91.00 ; 23.40 ; 28.20.Fc
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present results of the determination of36C1 (T 1/2=3.0·105a) in rock samples produced in situ by cosmic rays and natural radioactivities. These experiments were designed to determine the feasibility of using36Cl for studying erosion processes in calcium rich minerals like limestone or dolomite. The36Cl/Cl ratios in the samples have been determined with accelerator mass spectrometry (AMS) at the Munich accelerator laboratory. A first application is the investigation of the erosion in the last million years in Allchar (Yugoslavia) for the feasibility study of the geochemical205Tl solar neutrino experiment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281283
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  • 7
    Electronic Resource
    Electronic Resource
    Neutrino oscillations in the sun and the205Tl solar neutrino experiment (1992)
    Springer
    The European physical journal 341 (1992), S. 239-242 
    Details
    ISSN: 1434-601X
    Keywords: 96.60.Kx ; 25.30.Pt ; 13.15.−f
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Neutrino induced transition rates from205Tl to excited states in205Pb were calculated for neutrino fluxes from the different hydrogen burning reactions in the sun. Suppression factors for electron neutrinos due to flavor oscillations in the sun were obtained. The influence of neutrino oscillations on the neutrino capture rate of205Tl in dependence of the mixing angle and neutrino mass difference is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01298487
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  • 8
    Electronic Resource
    Electronic Resource
    Test of the Pauli exclusion principle for nucleons and atomic electrons by accelerator mass spectrometry (1991)
    Springer
    The European physical journal 340 (1991), S. 411-413 
    Details
    ISSN: 1434-601X
    Keywords: 11.30.Ly ; 36.10.−k ; 7.75+h
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The Pauli exclusion principle was tested by searching with accelerator mass spectrometry for non-Paulian atoms with three electrons in theK-shell and for non-Paulian nuclei with three protons or three neutrons in the nuclear 1 s1/2 shell. For non-Paulian atoms of $${}^{20}\widetilde{Ne}$$ and $${}^{36}\widetilde{Ar}$$ the following limits have been obtained: $$N({}^{20}\widetilde{Ne})/N({}^{20}Ne)〈 2 \cdot 10^{ - 21}$$ and $$N({}^{36}\widetilde{Ar})/N({}^{36}Ar)〈 4 \cdot 10^{ - 17}$$ . For non-Paulian nuclei of $${}^5\widetilde{Li}$$ and $${}^5\widetilde{He}$$ with three protons or three neutrons, respectively, in the nuclear 1 s1/2 shell the following limits have been measured: $$N({}^5\widetilde{Li})/N({}^6Li)〈 0.8 \cdot 10^{ - 17}$$ for a range of proton separation energies of $${}^5\widetilde{Li}$$ between 0 and 50 MeV and $$N({}^5He)/N({}^4He)〈 2 \cdot 10^{ - 15}$$ for neutron separation energies between 0 and 32 MeV. The result for5Li is used to deduce a limit for the probability β2/2 of finding two colliding protons in the symmetric state with respect to exchange to be β2/2〈0.5.10−32.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290329
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  • 9
    Electronic Resource
    Electronic Resource
    Feasibility studies of the geochemical solar neutrino experiment205Tl(v,e−)205Pb (1991)
    Springer
    The European physical journal 340 (1991), S. 415-418 
    Details
    ISSN: 1434-601X
    Keywords: 96.60 ; 13.15 ; 25.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract New investigations on the signal-to-background ratio of the geochemical solar neutrino experiment205Tl(v,e−)205Pb using thallium minerals from Allchar (Yugoslavia) are presented. The contributions of several background processes producing205Pb induced by natural radioacitivities, stopped negative muons and fast muons are estimated. The production rate of205Pb by cosmic ray muons, derived from experimental investigations with 120, 200 and 280 GeV muons at the high energy muon channel of CERN, is significantly higher than expected by former estimations. The feasibility of the geochemical205T1 solar neutrino experiment is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01290330
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  • 10
    Electronic Resource
    Electronic Resource
    36Cl and41Ca depth profiles in a Hiroshima granite stone and the Dosimetry System 1986 (1992)
    Springer
    The European physical journal 341 (1992), S. 235-238 
    Details
    ISSN: 1434-601X
    Keywords: 87.60.M
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract For the first time a depth profile of the radioisotope41Ca produced by neutrons from the atomic bomb explosion of Hiroshima was measured. The measurements were performed at the Munich Tandem Laboratory via accelerator mass spectrometry. The41Ca depth profile is part of the evaluation to determine the neutron spectrum of the A-bomb which is basis of the Dosimetry System 1986.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01298486
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