Journal ArticleDOI
Polarization correlation study of the electron-impact excitation of neon and argon.
Khakoo Ma,McConkey Jw +1 more
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In this article, a Stokes parameter analysis was carried out for the excitation of neon and argon by 80-eV incident electrons and the results showed that the transfer of angular momentum to the atom is positive and is in fact surprisingly ''heliumlike''.Abstract:
The recent development of a circular polarization analyzer for the vacuum ultraviolet spectral region has enabled a Stokes parameter analysis to be carried out for the excitation of neon and argon by 80-eV incident electrons. The results show that the transfer of angular momentum to the atom is positive and is in fact surprisingly ''heliumlike.'' Small deviations from total coherence were observed and are discussed.read more
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Journal ArticleDOI
Collisional alignment and orientation of atomic outer shells I. Direct excitation by electron and atom impact
Nils Andersen,Nils Andersen,Jean W. Gallagher,Jean W. Gallagher,Ingolf V. Hertel,Ingolf V. Hertel +5 more
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Electron impact excitation of the argon 3p54s configuration: differential cross-sections and cross-section ratios
Murtadha A. Khakoo,P. Vandeventer,J. G. Childers,Isik Kanik,Christopher J. Fontes,Klaus Bartschat,Vlado Zeman,Don H. Madison,Sachin Saxena,Rajesh Srivastava,Allan Stauffer +10 more
TL;DR: In this article, electron-impact differential cross-section (DCS) and DCS ratio measurements for the excitation of the four levels making up the 3p54s configuration of argon are reported at incident electron energies of 14, 15, 17.5, 20, 30, 50 and 100 eV.
Journal ArticleDOI
Precise determination of the pressure dependence of Tc in the heavy-fermion superconductor CeCu2Si2
TL;DR: In this article, the authors reported new experimental results on the pressure dependence of the superconducting transition temperature, Tc(p), for the heavy-fermion superconductor CeCu2Si2.
Journal ArticleDOI
A critical look at electron-photon coincidence experiments with heavy noble gases in the regime of large impact parameters
TL;DR: The current status of electron-photon coincidence experiments with the heavy noble gases, critically assess the level of agreement and disagreement between experiment and theory, discuss apparent trends in the data, make recommendations for the direction of future experiments and suggest ways to ensure that measured coherence parameters are free from instrumental and physical effects to the maximum extent possible as mentioned in this paper.
Journal ArticleDOI
The superconducting phases of UPt3 under pressure
TL;DR: In this paper, the upper critical field Hc2(T) of the heavy fermion superconductor UPt3 for a magnetic field applied in the basal plane has been studied down to 150 mK and under hydrostatic pressure up to 10 kbar.
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