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The Institute of Physics ( IOP ) по журналам "Physica Scripta"

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  • E Jacquet; P Boduch; M Chantepie; M Druetta; D Hennecart; X Husson; D Lecler; R E Olson; J Pascale; N Stolterfoht; M Wilson (1993-05-01)
    A spectroscopic analysis of light emitted in the 200-600 nm wavelength range by Ar7+, Ar6+ and Ar5+ ions after charge exchange in 120 keV Ar8+-Li collisions is performed. Transitions with n = 1 and n = 2 for n = 8, 9, 10 ...
  • E Jacquet; P Boduch; M Chantepie; M Druetta; D Hennecart; X Husson; D Lecler; F Martin-Brunetiere; R E Olson; J Pascale; M Wilson (1994-02-01)
    A spectroscopic analysis of light emitted in the 200-600 nm wavelength range by Kr7+, Kr6+ and Kr5+ ions following 120-keV Kr8+ Li collisions is performed. Transitions with n = 0, 1 and 2 in Kr VIII from n = 6-11 states ...
  • A I Ahonen; M S Hämäläinen; M J Kajola; J E T Knuutila; P P Laine; O V Lounasmaa; L T Parkkonen; J T Simola; C D Tesche (1993-01-01)
    A 122-channel d.c. SQUID magnetometer with a helmet-shaped detector array covering the subject's head has been operational in the Low Temperature Laboratory of the Helsinki University of Technology since June 1992. The new ...
  • H Hoffmann; R Klein; M Schwoerer (1993-01-01)
    The 13th General Conference of the Condensed Matter Division of the European Physical Society was held in conjunction with the Frühjahrstagung des Arbeitskreises Festkörperphysik der Deutschen Physikalischen Gesellschaft ...
  • G Magnusson; P Andersson; I Bergqvist (1980-01-01)
    Activation cross-sections for neutron capture have been measured at an energy of 14.7 ± 0.3 MeV for the nuclei 23Na, 55Mn, 89Y, 127I, 138Ba, 186W and 197Au. The influence of secondary neutrons was studied both experimentally ...
  • José L de Segovia; F Flores; F García-Moliner (1994-01-01)
    This volume contains the proceedings of the 14th General Conference of the Condensed Matter Division, GCCMD-14, held on 2831 March 1994, at the Faculty of Civil Engineering of the Polytechnical University of Madrid. The ...
  • G Martin; O N Jarvis; J Källne; V Merlo; G Sadler; P van Belle (1987-01-01)
    A proton spectrometer has been installed and operated on JET with the objective of measuring the energy spectrum of 15 MeV protons produced in 3He-d reactions under conditions of ICRF heating. The proton emission is observed ...
  • G. Chiarotti (1996-01-01)
    The 15th General Conference of the Condensed Matter Division of the European Physical Society took place in Baveno- Stresa (Lake Maggiore, Italy) from April 22 to 25, 1996. It was the 15th of a series that started in 1980 ...
  • Hafliði Pétur Gíslason; Viðar Guðmundsson (1994-01-01)
    Some 30 years ago an informal meeting of the few Nordic specialists in semiconductor physics marked the beginning of what has become a biannual meeting of some hundred physicists and physics students from all the Nordic ...
  • K-A Chao; A Borg; B O Fimland; T A Fjeldly (1997-01-01)
    The informal meeting of Nordic semiconductor scientists and engineers, more than 30 years ago in Finland, has developed into a biannual Nordic Semiconductor Meeting. With increasing number of participants and broadening ...
  • Hans Wilhelmsson (1982-01-01)
    Invited Papers: The Physics of Hot Plasmas During the last decade a dramatic evolution of plasma physics has occurred. Not only have gigantic fusion plasma machines been planned, and are now being built, and elaborate ...
  • J L Azan; J C Ciret; A Courtois; G Deschamps; J Faure; H Lecroart; J P Penicaud (1983-01-01)
    Transformations have been carried out on some parts of the ion source to improve the working conditions and to yield a more intense and stable ion-beam. Problems still remain concerning gas injection and ion confinement.
  • Henrik Jeldtoft Jensen (1991-06-01)
    It is pointed out that the ordinary linear diffusion equation P(r, t)/t = 2P(r, t) without any source term, leads to a 1/f power spectrum in any spatial dimension if the system is driven by a white noise boundary condition.
  • L B Kiss; Gy Trefàn; K Tompa; I Hevesi; G Gévay; A Lovas (1989-06-01)
    Conductance noise measurements done on point contacts of (melt-quenched) glassy metal ribbons are reported. The lower limit of the 1/f noise factor obtained was stronger by 3-5 orders of magnitude than that usual in ordinary ...
  • Joseph L McCauley (1988-01-01)
    1.1. Phase space, phase flows and Liouville's Theorem 1.2. Equilibrium points, linear stability and the phase portrait 1.3. Nonlinear stability 1.4. Bifurcations and change of stability 1.5. A conservative system showing ...
  • E Papp (1991-01-01)
    Energy formulae for two-particle Klein-Gordon systems subjected to Coulomb and Yukawa potentials are derived to first 1/N-order. The energies obtained in this manner incorporate the influence of the mass-asymmetry via the ...
  • J Z Kaminski (1986-12-01)
    In recent experiments on photoionization and electron-atom collisions a great number of photons absorbed or emitted were reported. These experiments justify the consideration of the limit of large n for n-photon processes. ...
  • J Z Kamiski (1990-10-01)
    The aim of this paper is to show that the 1/n expansion for n-photon processes can be considered as a quasiclassical one. We discuss qualitatively the domain of validity of the leading term of this expansion and show how ...
  • K G Välivaara; A Marelius (1971-03-01)
    Halflives of some excited states in decay products of ThB (212Pb) have been measured by the delayed coincidence technique. For 208Pb the results are: 3 198 keV level 286±26 ps, 3 475 keV level 4±3 ps, 3 961 keV level 18 ...
  • E Träbert; I Martinson (1998-01-01)
    Neutral beam injection heating in a future fusion test reactor like ITER may be expected to use higher energy He beams than are common now (1550keV/amu). The ionization and excitation cross sections of, for example, ...