Tensor polarization measurement in elastic electron-deuteron scattering in the momentum transfer range 3. 8 [le] q [le] 4. 6 fm[sup [minus]1]

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1992

OSTI ID:7160864

The, I

The tensor polarization of the recoil deuteron in elastic electron-deuteron scattering has been measured at the Bates Linear Accelerator Center at three values of four-momentum transfer, Q = 3.78, 4.22, and 4.62 ([+-]0.02) fm[sup [minus]1], corresponding to incident electron energies of 653, 755, and 853 ([+-]4) MeV. The scattered electrons and the recoil deuterons were detected in coincidence. The recoiled deuterons were transported to a liquid hydrogen target to undergo a second scattering. The angular distribution of the d-p scattering was measured using a polarimeter. The polarimeter was calibrated using a polarized deuteron beam at the Saturne National Laboratory, France. A Monte Carlo procedure as used to generate interpolated calibration data because the energy spread in the deuteron energies in the Bates experiment spanned the range of deuteron energies in the calibration experiment. The extracted values of t[sub 20] are compared to predictions of different theoretical models of the electromagnetic form factors of the deuteron. The predictions of nucleon-meson dynamics are in fair agreement with the extracted t[sub 20] values. A Skyrme model is in rough agreement with the data. Some quark models also give reasonable agreement with the data, but a quark description of the data is not absolutely required in the momentum transfer range measured in this experiment. Quark models which do not predict a zero in the charge monopole form factor are in disagreement with the data. Perturbative quantum chromodynamics (PQCD) is also in disagreement with the data, indicating that PQCD is not applicable in this momentum transfer region. The extracted values of t[sub 20], along with the world data on the structure functions A(Q) and B(Q), have been used to separate the charge monopole and charge quadrupole form factors of the deuteron. A node in the charge monopole form factor is observed at Q = 4.39 [+-] 0.16 fm[sup [minus]1].

• Research Organization: Massachusetts Inst. of Tech., Cambridge, MA (United States)
• OSTI ID: 7160864
• Country of Publication: United States
• Language: English

Related Subjects

663420 -- Lepton-Induced Reactions & Scattering-- (1992-)
663440* -- D-
T-
& He-induced Reactions & Scattering-- (1992-)
663510 -- Nuclear Mass Ranges-- A=1-5-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEAMS
COLLIDING BEAMS
DEUTERON BEAMS
ELASTIC SCATTERING
ELECTRON-DEUTERON INTERACTIONS
ENERGY RANGE
INTERACTIONS
ION BEAMS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
MEV RANGE
MEV RANGE 100-1000
PARTICLE INTERACTIONS
POLARIZATION
SCATTERING
TENSOR FORCES