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36.10.−k (1)
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PACS. 36.10.-k Exotic atoms and molecules (containing mesons, muons, and other unusual particles) – 42.62.Fi Laser spectroscopy – 34.20.Gj Intermolecular and atom-molecule potentials and forces
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Digitale Medien

Precision measurement of antiprotonic hydrogen and deuterium X-rays (1992)

Heitlinger, K. ; Bacher, R. ; Badertscher, A. ; [weitere]

Springer

The European physical journal 342 (1992), S. 359-368

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ISSN: 1434-601X

Schlagwort(e): 36.10.−k

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract X-rays from antiprotonic hydrogen and deuterium have been measured at low pressures. Using the cyclotron trap, a 105 MeV/c antiproton beam from LEAR was stopped with an efficiency of 86% in 30 mbar hydrogen gas in a volume of only 100 cm3. The X-rays were measured with Si(Li) detectors and a Xe-CH4 drift chamber. The strong interaction shift and broadening of the Lymanα transition and the spin-averaged 2p width in antiprotonic hydrogen was measured with unprecedented accuracy. The triplet component of the ground state in antiprotonic hydrogen was determined for the first time.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01291519

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Digitale Medien

Discrepancies in kinematic calculations of HOLZ lines (1993)

Eades, J. A. ; Moore, S. ; Pfullmann, T. ; [weitere]

New York, NY [u.a.] : Wiley-Blackwell

Microscopy Research and Technique 24 (1993), S. 509-513

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ISSN: 1059-910X

Schlagwort(e): Convergent-beam diffraction ; Lattice parameter ; Computer simulation ; Electron wavelength ; Life and Medical Sciences ; Cell & Developmental Biology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Allgemeine Naturwissenschaft

Notizen: We have found significant differences between the results of computer simulations of HOLZ line patterns. The computations in question are made in the kinematical approximation. After trivial errors are eliminated the programs fall into two groups. There is a discrepancy between the two that increases with distance from the zone axis. The difference is small but not negligible at the level of precision used in determining lattice parameters or strain.We show which of the two is correct in the kinematic approximation and that the discrepancy between the two groups is of the order of the error introduced by dynamical interaction. © 1993 Wiley-Liss, Inc.

Zusätzliches Material: 3 Ill.