skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Threshold electrodisintegration in the {ital A}=3 system

Abstract

Inclusive inelastic electron scattering cross sections for {sup 3}H and {sup 3}He were measured for excitation energies below 18 MeV. Longitudinal and transverse response functions were determined from these cross sections for six values of the three-momentum transfer {ital q} in the range 0.88 {lt}{ital q}{lt}2.87 fm{sup {minus}1}. A previously observed {ital C}0 multipole enhancement near threshold in the two-body channel for {sup 3}He is confirmed but is not observed for {sup 3}H. The experimental data are found to be in good agreement with two recent calculations of the longitudinal and transverse response functions. The first uses variational ground-state wave functions and the orthogonal correlated states method to describe the two- and three-body breakup channels. The second uses bound and continuum Faddeev wave functions obtained for a simple central potential. Agreement with the data is good for the first model and better for the second. The inclusion of final-state interactions (FSI) in the Faddeev continuum is found to be very important in these threshold breakup kinematics; in many cases inclusion of FSI changes the response functions by factors of two or three giving excellent agreement with the data. The transverse response functions are well reproduced, even though neither model includesmore » meson exchange currents. Ratios of the response functions for the two nuclei are also well described.« less

Authors:
; ; ;  [1]; ; ; ; ; ; ; ; ; ; ; ;  [2]; ; ;  [3];  [4] more »; ; ;  [5];  [6]; ;  [7];  [8];  [9] « less
  1. Saskatchewan Accelerator Laboratory, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 0W0 (Canada)
  2. Bates Linear Accelerator Center and Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
  3. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
  4. Department of Physics, Worcester Polytechnic Institute, Worcester, Massachusetts 01601 (United States)
  5. Department of Physics, University of Virginia, Charlottesville, Virginia 22901 (United States)
  6. Department of Physics, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States)
  7. Department of Physics, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)
  8. Instituto Nazionale di Fisica Nucleare, Lecce (Italy)
  9. Institute for Nuclear Physics, University of Utrecht, 3508 TA Utrecht (Netherlands)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility
OSTI Identifier:
144776
DOE Contract Number:  
AC05-84ER40150; FG05-86ER40261; AC02-76ER03069
Resource Type:
Journal Article
Journal Name:
Physical Review, C
Additional Journal Information:
Journal Volume: 49; Journal Issue: 3; Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; HELIUM 3 TARGET; ELECTRON REACTIONS; INELASTIC SCATTERING; MEV RANGE 10-100; DIFFERENTIAL CROSS SECTIONS; FOUR-BODY PROBLEM; MEV RANGE 01-10

Citation Formats

Retzlaff, G.A., Caplan, H.S., Hallin, E.L., Skopik, D.M., Beck, D., Blomqvist, K.I., Dobson, G., Dow, K., Farkhondeh, M., Flanz, J., Kowalski, S., Sapp, W.W., Sargent, C.P., Tieger, D., Turchinetz, W., Williamson, C.F., Dodge, W., Maruyama, X.K., Lightbody, J.W. Jr., Goloskie, R., McCarthy, J., Ueng, T.S., Whitney, R.R., Quinn, B., Dytman, S., Von Reden, K., Schiavilla, R., and Tjon, J.A. Threshold electrodisintegration in the {ital A}=3 system. United States: N. p., 1994. Web. doi:10.1103/PhysRevC.49.1263.
Retzlaff, G.A., Caplan, H.S., Hallin, E.L., Skopik, D.M., Beck, D., Blomqvist, K.I., Dobson, G., Dow, K., Farkhondeh, M., Flanz, J., Kowalski, S., Sapp, W.W., Sargent, C.P., Tieger, D., Turchinetz, W., Williamson, C.F., Dodge, W., Maruyama, X.K., Lightbody, J.W. Jr., Goloskie, R., McCarthy, J., Ueng, T.S., Whitney, R.R., Quinn, B., Dytman, S., Von Reden, K., Schiavilla, R., & Tjon, J.A. Threshold electrodisintegration in the {ital A}=3 system. United States. doi:10.1103/PhysRevC.49.1263.
Retzlaff, G.A., Caplan, H.S., Hallin, E.L., Skopik, D.M., Beck, D., Blomqvist, K.I., Dobson, G., Dow, K., Farkhondeh, M., Flanz, J., Kowalski, S., Sapp, W.W., Sargent, C.P., Tieger, D., Turchinetz, W., Williamson, C.F., Dodge, W., Maruyama, X.K., Lightbody, J.W. Jr., Goloskie, R., McCarthy, J., Ueng, T.S., Whitney, R.R., Quinn, B., Dytman, S., Von Reden, K., Schiavilla, R., and Tjon, J.A. Tue . "Threshold electrodisintegration in the {ital A}=3 system". United States. doi:10.1103/PhysRevC.49.1263.
@article{osti_144776,
title = {Threshold electrodisintegration in the {ital A}=3 system},
author = {Retzlaff, G.A. and Caplan, H.S. and Hallin, E.L. and Skopik, D.M. and Beck, D. and Blomqvist, K.I. and Dobson, G. and Dow, K. and Farkhondeh, M. and Flanz, J. and Kowalski, S. and Sapp, W.W. and Sargent, C.P. and Tieger, D. and Turchinetz, W. and Williamson, C.F. and Dodge, W. and Maruyama, X.K. and Lightbody, J.W. Jr. and Goloskie, R. and McCarthy, J. and Ueng, T.S. and Whitney, R.R. and Quinn, B. and Dytman, S. and Von Reden, K. and Schiavilla, R. and Tjon, J.A.},
abstractNote = {Inclusive inelastic electron scattering cross sections for {sup 3}H and {sup 3}He were measured for excitation energies below 18 MeV. Longitudinal and transverse response functions were determined from these cross sections for six values of the three-momentum transfer {ital q} in the range 0.88 {lt}{ital q}{lt}2.87 fm{sup {minus}1}. A previously observed {ital C}0 multipole enhancement near threshold in the two-body channel for {sup 3}He is confirmed but is not observed for {sup 3}H. The experimental data are found to be in good agreement with two recent calculations of the longitudinal and transverse response functions. The first uses variational ground-state wave functions and the orthogonal correlated states method to describe the two- and three-body breakup channels. The second uses bound and continuum Faddeev wave functions obtained for a simple central potential. Agreement with the data is good for the first model and better for the second. The inclusion of final-state interactions (FSI) in the Faddeev continuum is found to be very important in these threshold breakup kinematics; in many cases inclusion of FSI changes the response functions by factors of two or three giving excellent agreement with the data. The transverse response functions are well reproduced, even though neither model includes meson exchange currents. Ratios of the response functions for the two nuclei are also well described.},
doi = {10.1103/PhysRevC.49.1263},
journal = {Physical Review, C},
number = 3,
volume = 49,
place = {United States},
year = {1994},
month = {3}
}