J. N. Knudson | Researchain

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Physics Letters B | 1988

Isobaric-analog-state transitions in pion charge-exchange reactions above the Δ(1232) resonance

S. H. Rokni; H. W. Baer; A. G. Bergmann; J. D. Bowman; F. Irom; M. J. Leitch; C. J. Seftor; J. Alster; E. Piasetzky; B.L. Clausen; R. A. Loveman; R.J. Peterson; J.L. Ullmann; J. N. Knudson; U. Sennhauser

Forward-angle differential cross sections for the (π+, π0) reaction to isobaric analog states were measured at 300, 425, 500, and 550 MeV on targets ranging in mass from 7Li to 208Pb. The extrapolated 0° cross sections are found to rise markedly between 300 and 425 MeV, contrary to the behavior of the free πN process. The mass and energy dependence of the cross sections at the higher energies are discussed within the framework of the Glauber model.

Physical Review C | 1987

Double-analog transition 48Ca( pi +, pi -)48Ti at 35 and 50 MeV.

H. W. Baer; M. J. Leitch; R. L. Burman; M. D. Cooper; A. Z. Cui; B. J. Dropesky; G. C. Giesler; F. Irom; C. L. Morris; J. N. Knudson; J. R. Comfort; D. H. Wright; R. Gilman

Physical Review C | 1986

Excitation of isovector giant resonances in pion single-charge exchange at 120, 165, and 230 MeV.

F. Irom; J. D. Bowman; G. O. Bolme; E. Piasetzky; U. Sennhauser; J. Alster; J. Lichtenstadt; M. A. Moinester; J. N. Knudson; S. H. Rokni; E. R. Siciliano

Physical Review C | 1986

Forward-angle cross sections for pion-nucleon charge exchange between 100 and 150 MeV/c

D.H. Fitzgerald; Helmut W. Baer; J. D. Bowman; Cooper; F. Irom; N.S.P. King; M. J. Leitch; Eli Piasetzky; W. J. Briscoe; M. E. Sadler; K.J. Smith; J. N. Knudson

Physical Review C | 1989

14C( pi +, pi -)14O reaction between 19 and 80 MeV.

M. J. Leitch; H. W. Baer; R. L. Burman; C. L. Morris; J. N. Knudson; J. R. Comfort; D. H. Wright; R. Gilman; S. H. Rokni; E. Piasetzky; Z. Weinfeld; W. R. Gibbs; William B. Kaufmann

Physical Review C | 1986

Pion single charge exchange on /sup 14/C from 35 to 295 MeV

J.L. Ullmann; P. W. F. Alons; J.J. Kraushaar; J. H. Mitchell; R.J. Peterson; R.A. Ristinen; J. N. Knudson; J. R. Comfort; H. W. Baer; J. D. Bowman; M. D. Cooper; D. H. Fitzgerald; F. Irom; M. J. Leitch; E. Piasetzky

Physical Review C | 1989

Pion charge exchange to the isovector giant dipole state at energies above the 3-3 resonance

R. A. Loveman; B. L. Clausen; R.J. Peterson; S. H. Rokni; H. W. Baer; A. G. Bergmann; J. D. Bowman; F. Irom; C. J. Seftor; J. Alster; E. Piasetzky; J. N. Knudson; U. Sennhauser

Physical Review C | 1987

Pion scattering to collective excitations in /sup 90/Zr and /sup 118/Sn

J.L. Ullmann; P. W. F. Alons; B. L. Clausen; J.J. Kraushaar; J. H. Mitchell; Roselyn Peterson; R.A. Ristinen; R.L. Boudrie; N.S.P. King; C. L. Morris; J. N. Knudson; E. F. Gibson

Physical Review C | 1991

Coincidence measurements of the (. pi. sup + ,. pi. sup 0 p ) reaction at T sub. pi. sup + =165 MeV

S. Hoibraten; S. Gilad; W.J. Burger; R. Redwine; E. Piasetzky; H.W. Baer; J.D. Bowman; F.H. Cverna; F. Irom; M. J. Leitch; J. N. Knudson; Raymond Astronomy; S. H. Rokni

Physical Review C | 1989