Effective-Field Calculation of Electronic Polarizability

Litt, Clotilde

doi:10.1103/physreva.1.258

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Litt, et al 1970 [40] This experiment was performed at SLAC with electrons of incident energies 3.0 ::; Eo ::; 10 GeV scattered from a 23 em liquid hydrogen target. The same 8-GeV spectrometer in End Station A that was used in the present experiment was used by Litt, eta/.…”

Section: Final Values Of the Form Factorsmentioning

confidence: 99%

Measurement of the proton elastic form factors for Q2=1−3(Gev/c)2

et al. 1989

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This work would not have been possible without the help of a great many people. Special thanks goes to my thesis advisor, Dr. Brad Filippone, who spent hundreds of hours helping me through the experiment, data analysis, and writing of this thesis.His patience, dedication, and wisdom have shown me the best qualities a physicist can achieve. I would also like to thank the scientists and staff of the Kellogg Radiation Laboratory and SLAC Experiment E140 who made this experiment possible. In particular, the spokespersons for E140, Dr. Arie Bodek and Dr. Steve Rock, deserve credit for their many hours of help. Thanks also goes to Dr. Sridhara Dasu for his many contributions to the data analysis presented here. Dr. Dave Potterveld provided much of the software that assisted in writing this thesis, along with many helpful answers to my numerous questions over the years. Thanks to you all. I would also like to thank my many friends, office mates, and room mates that I have had while at Caltech. Special thanks goes to Mike Hoenk, Tom Fric, and Doug Collins, who have provided many of the fond memories I take with me from Caltech.My love and gratitude also goes to Genesis Starr, who has greatly enriched my life here. My stay at Caltech could not have been as fulfilling without her friendship. My appreciation also goes to my "Pasadena parents," Shirley and John Fields, who gave me tremendous support and helped keep me sane.Finally, I would like to thank my parents and family; for without their love and support none of this would have been possible.

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Section: Final Values Of the Form Factorsmentioning

confidence: 99%

Measurement of the proton elastic form factors for Q2=1−3(Gev/c)2

et al. 1989

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“…1. The proton form factor ratio µG E /G M , as determined via Rosenbluth-type (black points, from [1][2][3][4][5][6]) and polarizationtype (gray points, from [7][8][9][10][11][12]) experiments. While the former indicate a ratio close to 1, the latter show a distinct linear fall-off.…”

Section: Theoretical Calculationsmentioning

confidence: 99%

Positron beams and two-photon exchange: The key to precision form factors

Bernauer¹

2018

AIP Conference Proceedings

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The proton elastic form factor ratio can be measured either via Rosenbluth separation in an unpolarized beam and target experiment, or via the use of polarization degrees of freedom. However, data produced by these two approaches show a discrepancy, increasing with Q 2 . The proposed explanation of this discrepancy-two-photon exchange-has been tested recently by three experiments. The results support the existence of a small two-photon exchange effect but cannot establish that theoretical treatment at the measured momentum transfers are valid. At larger momentum transfers, theory remains untested. This paper investigates the possibilities of measurements at DESY and Jefferson Lab to measure the effect at larger momentum transfers.

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Effective-Field Calculations of Polarizabilities and Shielding Factors for He, Ne, A, and Kr Isoelectronic Series

Litt

1973

Phys. Rev. A

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Electronic dipole and quadrupole polarizabilities and the Sternheimer shielding or antishielding factors are calculated for several closed-shell atomic systems. The calculations are carried out by an effective-field method using the perturbed orbitals, given by the uncoupled Hartree-Pock method, as trial functions. The external field is replaced either by a mean effective field taking into account the mean coupling between the deformations of the various orbitals or by a set of effective fields, each of them being relative to a particular perturbed orbital. Numerical results obtained for the He, Ne, A, and Kr isoelectronic series show a much better agreement with the corresponding coupled values than the initial uncoupled results.

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Effective-Field Calculation of Electronic Polarizability

Cited by 3 publications

References 13 publications

Measurement of the proton elastic form factors for Q2=1−3(Gev/c)2

Measurement of the proton elastic form factors for Q2=1−3(Gev/c)2

Positron beams and two-photon exchange: The key to precision form factors

Effective-Field Calculations of Polarizabilities and Shielding Factors for He, Ne, A, and Kr Isoelectronic Series

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