Results 221 to 230 of about 1,858,753 (236)
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The spectra of Br V, Br VI and Br VII
Proceedings of the Physical Society, 1934The vacuum spark spectra of bromine have been investigated under different degrees of excitation in the region λ 1400 to λ 400, by means of a Siegbahn spectrograph. From a careful scrutiny of the plates the lines have been assigned to the different stages of ionization of the element.
A S Rao, K R Rao
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Spectra and energy levels of Br xxv, Br xxix, Br xxx, and Br xxxi
Journal of the Optical Society of America B, 1986Emission lines of highly ionized bromine in the wavelength region 17–93 A have been identified in spectra recorded at the University of Rochester’s OMEGA laser facility. The wavelengths of 2s–2p transitions in nitrogenlike Br xxix, carbonlike Br xxx, and boronlike Br xxxi are presented.
U. Feldman +6 more
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Journal of Mathematical Physics, 1990
After an analysis of the concept of Lagrangian gauge fixing, it is shown that the arbitrariness in the parametrization of gauge transformations gives rise to a whole family of classical BRS transformations. This is explicitly shown for the free-relativistic particle. Two inequivalent classes of BRS Lagrangians are defined.
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After an analysis of the concept of Lagrangian gauge fixing, it is shown that the arbitrariness in the parametrization of gauge transformations gives rise to a whole family of classical BRS transformations. This is explicitly shown for the free-relativistic particle. Two inequivalent classes of BRS Lagrangians are defined.
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BRS and anti-BRS symmetries in the planar gauge
Physical Review D, 1988The planar gauge is reexamined from various points of view. First, we find an annoying ambiguity in the definition of the product of two propagators. Second, Becchi-Rouet-Stora (BRS) invariance can be implemented only at the price of unavoidable second-order derivatives in the Lagrangian.
, Burnel, , Van der Rest-Jaspers M
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SIAM Journal on Matrix Analysis and Applications, 1999
A new algorithm for computing the eigenvalues of a narrow-band, nearly tridiagonal upper Hessenberg matrix is introduced. The method called BR algorithm belongs to the family of the QR algorithms. The new method works well in conjuction with the look-ahead Lanczos process: it attempts to exploit and preserve the structure of the auxiliary matrix ...
Geist, G. A. +2 more
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A new algorithm for computing the eigenvalues of a narrow-band, nearly tridiagonal upper Hessenberg matrix is introduced. The method called BR algorithm belongs to the family of the QR algorithms. The new method works well in conjuction with the look-ahead Lanczos process: it attempts to exploit and preserve the structure of the auxiliary matrix ...
Geist, G. A. +2 more
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Mobilities and interaction potentials for Br−–Ar, Br−–Kr, and Br−–Xe
The Journal of Chemical Physics, 1983Mobilities of Br− ions in Ar, Kr, and Xe gases at 300 K have been measured in a drift tube mass spectrometer over a wide range of E/N (the ratio of the electric field to the neutral gas number density). For any ion–neutral gas interaction potential, implementation of the Viehland–Mason kinetic theory (accurate for arbitrary E/N) yields theoretical ...
D. R. Lamm +8 more
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Representation of BRS and full BRS algebra
Journal of Physics A: Mathematical and General, 1988BRS transformations (named after C. Becchi, A. Rouet, and R. Stora) are an important tool in the discussion of physical gauge theories. From a purely algebraic point of view they form the BRS or full BRS Lie superalgebra. The latter is just \({\mathfrak gl}(1| 1)/centre\), the former is one of the two isomorphic two-dimensional graded subalgebras with ...
Patra, M. K. +2 more
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