摘要:

AbstractThe rigorous calculation of the Bound muon decay rate performed by Überall seems exhaustive. However an important effect not considered by him is the recoil of the nucleus.The present paper reports the computation of the decay rate using a perturbative type of wavefunction, similar to that used by Überall. In addition, the nuclear recoil effect has been taken into account and the results, as expected, exhibit a light increase over Überall's values, in particular for the lighter elements, where recoil is more pronounced.Screening by the atomic electrons and the effect of vacuum polarisation have also been considered, but eventually found to be negligib

ISSN:0003-3804    

DOI:10.1002/andp.19804920502

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractThe total cross‐sections for the photo‐nucleon reactionsy+p→p+v+v−andy+n→n+v+v−are calculated according to Weinberg‐Salam theory. The effect of the form factors is taken in the electromagnetic vertex. The dependence of the total cross‐sections on the energy of the incident photon is e

ISSN:0003-3804    

DOI:10.1002/andp.19804920503

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractTheory of two‐nucleon stripping reactions is reconsidered. The nucleon‐nucleon interactions are taken as Skyrme type potentials. Differential cross‐sections for two‐nucleon stripping reactions are calculated using DWBA approximation with different Skyrme type potentials of different parameters. The angular distributions for different two‐nucleon stripping reactions (t, p) with incident triton on the different targets of31P,40Ca,96Zr,118Sn and206Pb are calculated giving good agreement with the experimental data. Better values are extracted for the spectroscopi

ISSN:0003-3804    

DOI:10.1002/andp.19804920504

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractA microscopic model for describing the dielectric‐metal transition in hydrogen is derived with the help of methods of statistical mechanics. The Hamiltonian corresponds formally to the so‐called transverse Ising model. Taking from literature numerical values for certain parameters one may calculate the critical temperatureTcabove which any jump‐like change at the phase transition vanishes.Tcshould be in the range of 6…9 · 103K which has consequences for the internal structure of the giant planets Jupiter an

ISSN:0003-3804    

DOI:10.1002/andp.19804920505

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractDiskussion des asymptotischen Verhaltens von statischen Bezugstretaden‐Feldern, die Lösungen der verallgemeinerten Einstein‐Maxwellschen Feldgleichungen in der einheitlichen Feldtheorie mit Einsteinschem Fernparallelismus sind. Solche Lösungen entsprechen stabilen Wolken von Elektronen aus Diracs klassischer Elektrody

ISSN:0003-3804    

DOI:10.1002/andp.19804920506

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractDie von H. Treder [1] und E. Kreisel [2, 4]untersuchte Feldtheorie von Gravitation und Elektromagnetismus liefert eine überall singularitätsfreie, statische, kugelsymmetrische Lösung, die ein Wurmlochmodell des Elektrons darstellt, wenn man die Kopplungskonstanten aus Treder [1] genügend stark abändert. Die Entwicklung vong00nach Potenzen von 1/renthält im Unterschied zur Reisner‐Nordström‐Lösung keinen Term proportional 1/r2. Die Ladung des Elektrons hat ihren Ursprung praktisch allein im Wurmloch; die gravo‐elektrisch induzierte Ladungsdichte ist trotz der großen Kopplungskonstante versch

ISSN:0003-3804    

DOI:10.1002/andp.19804920507

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractThere are several sets of parameters of the often used Hellman‐like model potential discussed which had been determined by variational fitting within different basis sets. It is shown that Slater‐type orbitals (STO) form a useful variational basis. There are well approximated parameter values obtainable even if only one STO is u

ISSN:0003-3804    

DOI:10.1002/andp.19804920508

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

摘要:

AbstractThe electrical conductivity of a nonideal hydrogen plasma is calculated within the linear response formalism. The approximation given involves the first term with respect to the density expansion in the low degenerate case. The contributions of the free‐free scattering of the particles as well as the bound‐bound, bound‐scattering, and scattering‐scattering parts due to multiple scattering are discussed up to thi

ISSN:0003-3804    

DOI:10.1002/andp.19804920509

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY

ISSN:0003-3804    

DOI:10.1002/andp.19804920501

出版商:WILEY‐VCH Verlag    

年代:1980

数据来源: WILEY