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M. E. Rose

Bio: M. E. Rose is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Internal conversion & Scattering. The author has an hindex of 16, co-authored 31 publications receiving 1627 citations.

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479 citations

Journal ArticleDOI
TL;DR: In this article, a number of problems arising in the analysis of angular correlation and angular distribution data are considered, including corrections for finite angular resolution, and a brief discussion of the corrections for a decaying source.
Abstract: Consideration of a number of problems which arise in the analysis of angular correlation and angular distribution data is given. These include corrections for finite angular resolution. For a source of constant strength the questions of determination of most probable counting rates, their associated errors and the determination of the most probable coefficients in the Legendre representation of the data, as well as the errors in the determination of these coefficients, are examined. A brief discussion of the corrections for a decaying source is also presented.

405 citations

Journal ArticleDOI
TL;DR: In this paper, the electron-positron angular correlation and total conversion coefficient were calculated for internal pair formation and for arbitrary multipole order of the electric and magnetic radiation fields.
Abstract: The electron-positron angular correlation and total conversion coefficient are calculated for internal pair formation and for arbitrary multipole order of the electric and magnetic radiation fields The Born approximation is used and in the region of greatest experimental interest, $Z\ensuremath{\lesssim}40$ and gamma-ray energyg25 Mev, the consequent error should be negligible Numerical results are given for multipole fields of order ${2}^{l}$ with $l=1$ through 5 inclusive

86 citations

Journal ArticleDOI
TL;DR: In this paper, the internal conversion coefficients for electric and magnetic multipole radiation have been computed for the $K$shell in the relativistic case with the unscreened coulomb field acting on the electron.
Abstract: The internal conversion coefficients for electric and magnetic multipole radiation have been computed for the $K$-shell in the relativistic case with the unscreened coulomb field acting on the electron. The numerical results, which are obtained to four-significant-figure accuracy, were computed on the automatic sequence relay calculator (Mark I) and are given here for 12 values of $Z$ in the range $10l~Zl~96$ and 6 gammaray energies (between $0.3 m{c}^{2}$ and $5.0 m{c}^{2}$) for the first five electric and first five magnetic multipoles.

85 citations

Journal ArticleDOI
TL;DR: In this paper, the electron-positron angular correlation and total conversion coefficient were calculated for internal pair formation and for arbitrary multipole order of the electric and magnetic radiation fields.
Abstract: The electron-positron angular correlation and total conversion coefficient are calculated for internal pair formation and for arbitrary multipole order of the electric and magnetic radiation fields. The Born approximation is used and in the region of greatest experimental interest, Z≲40 and gamma-ray energy>2.5 Mev, the consequent error should be negligible. Numerical results are given for multipole fields of order 2l with l=1 through 5 inclusive.

82 citations


Cited by
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TL;DR: In this paper, the measurements of the hyperfine structure of free, naturally occurring, alkali atoms are reviewed and the experimental methods are discussed, as well as the relationships between hyperfine data and other atomic constants.
Abstract: The measurements of the hyperfine structure of free, naturally occurring, alkali atoms are reviewed. The experimental methods are discussed, as are the relationships between hyperfine structure data and other atomic constants.

749 citations

Journal ArticleDOI
R. Helm1
TL;DR: In this paper, a simple Born-approximation analysis of the elastic data yields values of the effective radii and surface thicknesses of the nuclear charge densities which (if suitably corrected for failure of the Born approximation) are in substantial agreement with the results of Hahn, Ravenhall, and Hofstadter.
Abstract: A survey has been made of the differential scattering cross sections for 187-Mev electrons on the even-even nuclei $_{12}\mathrm{Mg}^{24}$, $_{14}\mathrm{Si}^{28}$, $_{16}\mathrm{S}^{32}$, $_{18}\mathrm{A}^{40}$, and $_{28}\mathrm{Sr}^{88}$. It has been possible to separate the elastic scattering from the inelastic in all cases and to resolve the inelastic groups from specific nuclear levels for at least one level in all cases. A simple Born-approximation analysis of the elastic data yields values of the effective radii and surface thicknesses of the nuclear charge densities which (if suitably corrected for failure of the Born approximation) are in substantial agreement with the results of Hahn, Ravenhall, and Hofstadter; i.e., a radius parameter of $c\ensuremath{\cong}1.08 {A}^{\frac{1}{3}}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}13}$ cm (radius to half-maximum of the charge distribution) and a surface thickness of $t\ensuremath{\cong}2.5\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}13}$ cm (thickness from 10% to 90% of the maximum of the charge distribution). Phenomenological analysis of the inelastic scattering along the lines laid down by Schiff yields some tentative multipolarity assignments, and application of some results of Ravenhall yields estimates of (radiative) partial level widths; for the $E2$ transitions these correspond to lifetimes of \ensuremath{\sim}19\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}13}$ sec (Mg 1.37 Mev) to \ensuremath{\sim}1.4\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}13}$ sec (Sr 1.85 Mev). The observed strengths of the transitions are compared to those predicted by Weisskopf theory.

699 citations

Journal ArticleDOI
TL;DR: In this paper, the authors discuss the role of electron scattering and nuclear structure in the development of the first-order particle beamforming and nuclear nuclear nuclear structures, and propose a method for their analysis.
Abstract: (1966). Electron scattering and nuclear structure. Advances in Physics: Vol. 15, No. 57, pp. 1-109.

669 citations