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  • 1980-1984  (6)
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  • 1
    Electronic Resource
    Electronic Resource
    Kinetics of micellization of Triton X-100 in aqueous solutions (1980)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 84 (1980), S. 1536-1540 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100449a021
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Gyromagnetic ratios of the 4+ and 6+ rotational states of184W (1982)
    Springer
    The European physical journal 305 (1982), S. 157-166 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The nuclear Larmor precession has been observed for the 2+, 4+ and 6+ rotational states of184W in the hyperfine field of WFe by application of the TDPAC and the IPAC techniques. A carrier free radioactive source of184m Re alloyed with high purity iron was used for all three measurements. From the Larmor precession observed in the 2+ state by TDPACω L = 944(15) MHz and the knowng-factor the hyperfine fieldB 300 K hf (WFe)=−69.6(27)T was derived. The deviation from the result of a spin echo experiment with183WFe extrapolated to room temperature may be caused by the Bohr-Weisskopf effect (hyperfine anomaly). IPAC measurements with the same sample polarized in an external magnetic field of 1.6T gave for the 4+ and 6+ rotational states: ω L τ(4+)=0.0609(22) andω L τ(6+)=0.00735(102). By use of experimentalB(E2)-values theg R -factors were derived asg R (4+)=+0.276(26) andg R (6+)=+0.281(45). The directional correlation of the 537−384 keVγ-γ cascade has been analysed in terms of anE1/M2/E3 mixture for theK-forbidden 537keV transition. We obtained the mixing ratiosδ(M2/E1)=±0.086(16),δ(E3/E1)=−0.028(5) with the sign convention of Krane and Steffen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01415023
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The electric field gradient at the nuclear site of177Lu in Zn and In (1983)
    Springer
    The European physical journal 54 (1983), S. 31-33 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The electric quadrupole interaction frequencyν Q =eQV zz /h of177Lu in single crystals of Zn and In has been measured by the method of low temperature nuclear orientation. The results are $$\begin{gathered} v_Q ({}^{177}Lu\underline {Zn} ) = - 180(5)MHz \hfill \\ v_Q ({}^{177}Lu\underline {In} ) = - 19(5)MHz. \hfill \\ \end{gathered} $$ With the known quadrupole moment of177LuQ=3.39 (2) b we derive for the electric field gradientV zz (Lu Zn)=−2.20 (5)×1017 V/cm2 andV zz (Lu In)=−0.23 (6)×1017 V/cm2. The results are compared with magnetostriction measurements of silver single crystals doped with rare earth atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01507946
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Gyromagnetic ratios of the 3/2+ core vibration states of101Ru and95Mo (1984)
    Springer
    The European physical journal 317 (1984), S. 107-115 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Theg-factors of the first excited 3/2+ states of101Ru and95Mo have been measured by observing the rotation ofγ-γ directional correlations in the decays of 3.3y 101Rh and 61d 95m Tc in external magnetic fields of about 9.5T provided by our split coil superconducting magnet. The results: $$g_{{\raise0.5ex\hbox{$\scriptstyle 3$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 2$}}^ + } ({}^{101}Ru,127 keV) = - 0.157(8)$$ and $$g_{{\raise0.5ex\hbox{$\scriptstyle 3$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 2$}}^ + } ({}^{95}Mo,204 keV) = - 0.269(8)$$ are by far more accurate than previous investigations some of which had given quite different results. Bothg-factors are quite well explained by the de Shalit model in its most simple version. A measurement of the half-life of the 127 keV state of101Ru by delayed coincidences with CsF-detectors gave $$T_{{\raise0.5ex\hbox{$\scriptstyle 1$}\kern-0.1em/\kern-0.15em\lower0.25ex\hbox{$\scriptstyle 2$}}} ({}^{101}Ru,127 keV) = - 0.66(1) ns$$ in disagreement with most previous measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01420454
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  • 5
    Electronic Resource
    Electronic Resource
    NMR/ON of206BiFe produced by decay of cold implanted206Po (1983)
    Springer
    Hyperfine interactions 15 (1983), S. 329-332 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract 206Po was implanted into iron at T〈0.2 K. After electron capture decay to206Bi nuclear magnetic resonance of oriented206BiFe was observed with an asymmetric resonance line shape. Evaluation of the data with the superposition of two Gaussian lines results in ν=693.7(2) MHz for the center frequency of the narrow one of the two lines at external field zero. From this Bhf (BiFe)=119.0(1.3) T is derived. The effective spin-lattice relaxation time of206BiFe at T=13 mK was measured as Ti=0.94(5) s.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02159767
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Eine neue Synthese des Cinnamoyliminodithiokohlensäure-S,S-dimethylesters und Umsetzungen mit Nucleophilen (1980)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 322 (1980), S. 434-444 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Synthesis of Dimethyl-cinnamoylimino-dithiocarboxylate and Reactions with NucleophilesA new general synthesis of dimethyl-cinnamoylimino-dithiocarboxylate 1d is possible by reaction of 4-nitro-cinnamoylamide with carbon disulfide in the presence of sodium hydride and following alkylation. With the unsubstituted dimethyl-cinnamoylimino-dithiocarboxylate 10 is in-vestigated the reaction behavior with nucleophilic compounds. The treatment of 1c with primary amines, respectively, by mono- and disubstitution of the methylthio groups yields isothiourea 2 or guanidines 3. Benzocondensed heterocycles are formed by reaction of 1c with o-bifunctional nucleo-philes.The compounds 5, 6 and 7 have been synthesized from 1c with cysteamine, p-phenylenediamine and ethylenediamine.The oxadiazole 8 and isothiosemicarbazide 9 are obtained by reaction of the dithioester 1c with hydrazides. On the other hand cyclisation to the 1,2,4-triazole 11 over the intermediate 10 and to the 1,3,5-triazine 12 are possible.The reaction of 1c with carbanions in a basic medium affords acrylic derivatives 13.In the same way we isolated by reaction of dithioester 1c with a benzothiazolium salt the dark coloured compound 14. The physical properties of synthesized compounds are discussed by mass-, 1H-n.m.r.-, i.r.- and u.v.-spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19803220314
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    Paper (German National Licenses)
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