Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 127
Book Description
A proposal was approved by CEBAF PAC7 to measure angular distributions of the proton polarization for the d([gamma], p)n reaction in the GeV region. This proposed measurement will test the validity of extensions of conventional nuclear-physics theories to the higher energy regime. The results of the experiment will further constrain the evidence from SLAC experiments NE8 and NE17 that asymptotic scaling was observed above a photon energy of 1.3 GeV. Photoproton polarization measurements at lower energy indicate that the magnitude of the polarization increases with energy. This is consistent with the observation that polarizations are large in high-energy processes, e.g. A{sub nn} in pp 2!pp scattering or A{sub y} in pp 2![pi]°X. However, the polarizations in hadron-hadron scattering are believed to arise from Landshoff mechanisms. The higher energy photoproton experiment will permit the first measurements of polarization for a reaction, [gamma]d 2!pn, where there are no Landshoff terms. The experiment would make use of a polarimeter installed in either the High Resolution Spectrometer in Hall A or the Short Orbit Spectrometer in Hall C at CEBAF.
Measurement of Proton Polarization in the D({gamma}, P)n Reaction
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 127
Book Description
A proposal was approved by CEBAF PAC7 to measure angular distributions of the proton polarization for the d([gamma], p)n reaction in the GeV region. This proposed measurement will test the validity of extensions of conventional nuclear-physics theories to the higher energy regime. The results of the experiment will further constrain the evidence from SLAC experiments NE8 and NE17 that asymptotic scaling was observed above a photon energy of 1.3 GeV. Photoproton polarization measurements at lower energy indicate that the magnitude of the polarization increases with energy. This is consistent with the observation that polarizations are large in high-energy processes, e.g. A{sub nn} in pp 2!pp scattering or A{sub y} in pp 2![pi]°X. However, the polarizations in hadron-hadron scattering are believed to arise from Landshoff mechanisms. The higher energy photoproton experiment will permit the first measurements of polarization for a reaction, [gamma]d 2!pn, where there are no Landshoff terms. The experiment would make use of a polarimeter installed in either the High Resolution Spectrometer in Hall A or the Short Orbit Spectrometer in Hall C at CEBAF.
Publisher:
ISBN:
Category :
Languages : en
Pages : 127
Book Description
A proposal was approved by CEBAF PAC7 to measure angular distributions of the proton polarization for the d([gamma], p)n reaction in the GeV region. This proposed measurement will test the validity of extensions of conventional nuclear-physics theories to the higher energy regime. The results of the experiment will further constrain the evidence from SLAC experiments NE8 and NE17 that asymptotic scaling was observed above a photon energy of 1.3 GeV. Photoproton polarization measurements at lower energy indicate that the magnitude of the polarization increases with energy. This is consistent with the observation that polarizations are large in high-energy processes, e.g. A{sub nn} in pp 2!pp scattering or A{sub y} in pp 2![pi]°X. However, the polarizations in hadron-hadron scattering are believed to arise from Landshoff mechanisms. The higher energy photoproton experiment will permit the first measurements of polarization for a reaction, [gamma]d 2!pn, where there are no Landshoff terms. The experiment would make use of a polarimeter installed in either the High Resolution Spectrometer in Hall A or the Short Orbit Spectrometer in Hall C at CEBAF.
MEASUREMENT OF THE POLARIZATION OF CUMULATIVE PROTONS IN GAMMA A YIELDS PX REACTION.
Author: R. O. Avakyan
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Polarization of Protons from (d, P) Reactions at 21 Mev
Author: Edmund T. Boschitz
Publisher:
ISBN:
Category : Polarization (Nuclear physics)
Languages : en
Pages : 32
Book Description
Publisher:
ISBN:
Category : Polarization (Nuclear physics)
Languages : en
Pages : 32
Book Description
Measurement of the Induced Proton Polarization Pn in the 12C(e, E', P) Reaction
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The first measurements of the induced proton polarization Pn for the 12C(e, e', p) reaction are reported. The experiment was performed at quasifree kinematics for energy and momentum transfer (w, q) = (294 MeV, 765 MeV/c) and sampled a missing momentum range of 0-250 MeV/c. The induced polarization arises from final-state interactions and for these kinematics is dominated by the real part of the spin-orbit optical potential. The distorted-wave impulse approximation provides good agreement with data for the 1 p3/2 shell. The data for the continuum suggest that both the 1s1/2 shell and underlying l> 1 configurations contribute.
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The first measurements of the induced proton polarization Pn for the 12C(e, e', p) reaction are reported. The experiment was performed at quasifree kinematics for energy and momentum transfer (w, q) = (294 MeV, 765 MeV/c) and sampled a missing momentum range of 0-250 MeV/c. The induced polarization arises from final-state interactions and for these kinematics is dominated by the real part of the spin-orbit optical potential. The distorted-wave impulse approximation provides good agreement with data for the 1 p3/2 shell. The data for the continuum suggest that both the 1s1/2 shell and underlying l> 1 configurations contribute.
The Measurement of the Polarization of Protons from Deuteron Stripping Reactions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The University of Pittsburgh cyclotron and scattering system were used to investigate the angular distributions of the proton polarization for the following reactions: C/sup 12/(d, p)C/sup 13*/; Mg/sup 24/(d, p)Mg/sup 25*/; Be/sup 9/(d, p Be/sup 10*/; Si/sup 28/(d, p)Si/sup 29*/. For each reaction a measurement of the polarization at approximately every 5 deg between 10 and 80 deg was made. Deuteron elastic cross sections for the Be/sup 9/ and Si/sup 28/ reactions were measured. Data are shown in tables and figures. Results are compared with theoretical predictions and with results of other investigators. The validity of the sign rule and the possibility of determining j, from proton polarization measurements by some method other than the sign rule are discussed. (A.G.W.).
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The University of Pittsburgh cyclotron and scattering system were used to investigate the angular distributions of the proton polarization for the following reactions: C/sup 12/(d, p)C/sup 13*/; Mg/sup 24/(d, p)Mg/sup 25*/; Be/sup 9/(d, p Be/sup 10*/; Si/sup 28/(d, p)Si/sup 29*/. For each reaction a measurement of the polarization at approximately every 5 deg between 10 and 80 deg was made. Deuteron elastic cross sections for the Be/sup 9/ and Si/sup 28/ reactions were measured. Data are shown in tables and figures. Results are compared with theoretical predictions and with results of other investigators. The validity of the sign rule and the possibility of determining j, from proton polarization measurements by some method other than the sign rule are discussed. (A.G.W.).
Polarization measurement of the D+D protons
Author: David Wilhelm Werren
Publisher:
ISBN:
Category : Protons
Languages : en
Pages : 104
Book Description
Publisher:
ISBN:
Category : Protons
Languages : en
Pages : 104
Book Description
The Polarization of the Protons from the [gamma] +n [arrow Pointing Right] P+ [pi] Reaction
Author: John Randall Kenemuth
Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 200
Book Description
Publisher:
ISBN:
Category : Nuclear physics
Languages : en
Pages : 200
Book Description
A Measurement of the Polarization Parameter in Neutron-proton Charge Exchange Scattering from 2-12 GeV/c
Author: Randal Charles Ruchti
Publisher:
ISBN:
Category : Polarization (Nuclear physics)
Languages : en
Pages : 310
Book Description
Publisher:
ISBN:
Category : Polarization (Nuclear physics)
Languages : en
Pages : 310
Book Description
Measurement of the Polarization Parameter in Proton-proton Scattering from 1.7 to 6.1 BeV.
Author: Paul Dutton Grannis
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
Book Description
Proton Polarization in the Reaction C12(d,p)C13*(3.09 MeV) Near E[subscript D]
Author: Nicholas Charles Herbert
Publisher:
ISBN:
Category :
Languages : en
Pages : 184
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 184
Book Description