Skip to Main Content
Frequently Asked Questions
Submit an ETD
Global Search Box
Need Help?
Keyword Search
Participating Institutions
Advanced Search
School Logo
Files
File List
kent1350487441.pdf (8.77 MB)
ETD Abstract Container
Abstract Header
Polarized
3
He(e,e'n) Asymmetries in Three Orthogonal Measurements
Author Info
Long, Elena A.
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=kent1350487441
Abstract Details
Year and Degree
2012, PHD, Kent State University, College of Arts and Sciences / Department of Physics.
Abstract
Asymmetry measurements were conducted in Jefferson Lab’s experimental Hall A through electron scattering from a polarized
3
He target in the quasi-elastic
3
He(
e, e′n
) reaction. Measurements were made with the target polarized in the longitudinal direction with respect to the incoming electrons (A
L
), in a transverse direction that was orthogonal to the beam-line and parallel to the q-vector (A
T
), and in a vertical direction that was orthogonal to both the beam-line and the q-vector (A
y
0
). The experiment measured A
y
0
at four-momentum transfer squared (Q
2
) of 0.127 (GeV/
c
)
2
, 0.456 (GeV/
c
)
2
, and 0.953 (GeV/
c
)
2
. The A
T
and A
L
asymmetries were both measured at Q
2
of 0.505 (GeV/
c
)
2
and 0.953 (GeV/
c
)
2
. This is the first time that three orthogonal asymmetries have been measured simultaneously. Results from this experiment are compared with the plane wave impulse approximation (PWIA) and Faddeev calculations. These results provide important tests of models that use
3
He as an effective neutron target and show that the PWIA holds above Q
2
of 0.953 (GeV/
c
)
2
.
Committee
Bryon Anderson (Advisor)
Douglas Higinbotham (Advisor)
Subject Headings
Nuclear Physics
;
Particle Physics
Keywords
polarized
;
helium-3
;
3He
;
He-3
;
neutron
;
asymmetry
;
plane wave impulse approximation
;
PWIA
;
quasi elastic
;
electron scattering
;
Ay0
;
Ay
;
AT
;
AL
;
vertical
;
longitudinal
;
transverse
Recommended Citations
Refworks
EndNote
RIS
Mendeley
Citations
Long, E. A. (2012).
Polarized
3
He(e,e'n) Asymmetries in Three Orthogonal Measurements
[Doctoral dissertation, Kent State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=kent1350487441
APA Style (7th edition)
Long, Elena.
Polarized
3
He(e,e'n) Asymmetries in Three Orthogonal Measurements.
2012. Kent State University, Doctoral dissertation.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=kent1350487441.
MLA Style (8th edition)
Long, Elena. "Polarized
3
He(e,e'n) Asymmetries in Three Orthogonal Measurements." Doctoral dissertation, Kent State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=kent1350487441
Chicago Manual of Style (17th edition)
Abstract Footer
Document number:
kent1350487441
Download Count:
728
Copyright Info
© 2012, all rights reserved.
This open access ETD is published by Kent State University and OhioLINK.