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Featured researches published by R. R. Whitney.


Nuclear Physics | 1987

Elastic scattering of π+ and π− mesons from 3He and 4He at energies from 300 TO 475 MeV

J. Boswell; G. Das; P.C. Gugelot; Jan Kallne; J. McCarthy; L. Orphanos; R. Minehart; R. R. Whitney; P. A. M. Gram

Abstract The cross section for elastic scattering of pions from 3 He and 4 He was measured for incident energies from 300 to 475 MeV. The pions were detected in a magnetic spectrometer at scattering angles from 30° to 130°. Results on angular distributions are presented. A particularly interesting feature is that a deep minimum at 110°, previously observed at 295 MeV, is found to persist up to 400 MeV. The minimum is fixed in angle and is therefore not a simple function of q 2 .


Archive | 1994

Trinucleon Threshold Electrodisintegration

G. A. Retzlaff; H.S. Caplan; Emil Hallin; D. M. Skopik; D. Beck; K.I. Blomqvist; G. Dodson; K. Dow; M. Farkhondeh; J. Flanz; S. B. Kowalski; W. Sapp; C.P. Sargent; D. Tieger; W. Turchinetz; Claude F. Williamson; W. Dodge; X. K. Maruyama; J. W. Lightbody; R. Goloskie; J. McCarthy; T. S. Ueng; R. R. Whitney; B. P. Quinn; S. A. Dytman; K.F. von Reden; R. Schiavilla; John Tjon

Inclusive inelastic electron scattering cross sections for 3H and 3He were measured for excitation energies below 18 MeV. For six values of the three-momentum transfer q in the range 0.88 < q < 2.87 fm−1, longitudinal and transverse response functions were determined. The experimental data are in good agreement with two recent calculations. One uses variational ground-state wave functions and the orthogonal correlated states method to describe the two- and three-body breakup channels. The other uses bound and continuum Faddeev wave functions for a simple central potential. The inclusion of final-state interactions (FSI) in the Faddeev continuum is found to be very important; inclusion of FSI changes the response functions in the threshold kinematics by a large amount, yielding excellent agreement with the data.


Physical Review C | 1986

Deep inelastic separated response functions from Ca-40 and Ca-48

M. Deady; C. F. Williamson; Peter D. Zimmerman; R. Altemus; R. R. Whitney


Physical Review C | 1983

Response functions for deep inelastic scattering from Ca-40

M. Deady; C. F. Williamson; J. Wong; Peter D. Zimmerman; C. C. Blatchley; J. M. Finn; John J. LeRose; P. Sioshansi; R. Altemus; J. McCarthy; R. R. Whitney


Physical Review C | 1990

Quasielastic electron scattering and Coulomb sum rule in 4He.

K.F. von Reden; C. Alcorn; S. A. Dytman; B. Lowry; B. P. Quinn; D. Beck; Aron M. Bernstein; K.I. Blomqvist; G. Dodson; K. Dow; J. Flanz; G. Retzlaff; C.P. Sargent; W. Turchinetz; Manouchehr Farkhondeh; J. McCarthy; T. S. Ueng; R. R. Whitney


Physical Review C | 1994

Threshold electrodisintegration in the A=3 system

G. A. Retzlaff; H.S. Caplan; Emil Hallin; D. M. Skopik; D. Beck; K.I. Blomqvist; G. Dobson; K. Dow; M. Farkhondeh; J. Flanz; S. B. Kowalski; W. Sapp; C. P. Sargent; Daniel Raymond Tieger; W. Turchinetz; Claude F. Williamson; W. Dodge; X. K. Maruyama; J. Lightbody; R. Goloskie; J. S. McCarthy; T. S. Ueng; R. R. Whitney; B. P. Quinn; S. A. Dytman; K.F. von Reden; R. Schiavilla; John Tjon


Physical Review C | 1985

Inelastic electron scattering from 48Ca.

J. Wise; J. McCarthy; R. Altemus; B. E. Norum; R. R. Whitney; J. Heisenberg; John F. Dawson; O. Schwentker


Physical Review C | 1991

Pion absorption by 3He at the Δ-resonance energy

Subhasis Mukhopadhyay; S. M. Levenson; R. E. Segel; G. Garino; D. F. Geesaman; J. P. Schiffer; G. S. F. Stephans; B. Zeidman; E. Ungricht; Harold E. Jackson; R. Kowalczyk; D. Ashery; E. Piasetsky; M. A. Moinester; I. Navon; Smith Lc; R. Minehart; G. S. Das; R. R. Whitney; R. D. McKeown; Bryon D. Anderson; R. Madey; J. W. Watson


Physical Review C | 1983

Pion scattering and absorption contributions to proton emission from pion-nucleus collisions at T/sub. pi. / = 50--295 MeV

J. Kallne; R. Minehart; R. R. Whitney; R. L. Boudrie; J. B. McClelland; A. W. Stetz


Physical Review C | 1988

Inclusive Electron Scattering From

S. A. Dytman; Aron M. Bernstein; R. R. Whitney; T. S. Ueng; T.J. Pavel; R. Altemus; G.H. Mechtel; K.I. Blomqvist; J. McCarthy; B. Quinn

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J. McCarthy

University of Virginia

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R. Altemus

University of Virginia

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R. Minehart

University of Virginia

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B. E. Norum

University of Virginia

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J. Wise

University of Virginia

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John F. Dawson

University of New Hampshire

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K.I. Blomqvist

Massachusetts Institute of Technology

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O. Schwentker

University of New Hampshire

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S. A. Dytman

University of Pittsburgh

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T. S. Ueng

University of Virginia

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