Studies of parity violation using polarized slow neutron beams

1988 ◽  
Vol 66 (6) ◽  
pp. 542-547 ◽  
Author(s):  
J. Alberi ◽  
R. Hart ◽  
E. Jeenicke ◽  
R. Ost ◽  
Richard Wilson ◽  
...  
Keyword(s):  
Parity Violation ◽  
Slow Neutron ◽  
Early Attempt ◽  
Polarized Beams ◽  
Neutron Beams ◽  
The Future ◽  
Slow Neutrons

In this paper we review the work that has been done on studies of parity violation in nucleon systems using polarized beams of slow neutrons, first describing an early attempt by Haas et al. (Phys. Rev. 116, 1211 (1959)) and ending with some suggestions and predictions for the future.

Test of parity violation and time reversal invariance in slow neutron absorption reactions

1994 ◽  
Vol 577 (1-2) ◽  
pp. 433-442 ◽  
Author(s):  
T. Adachi ◽  
K. Asahi ◽  
M. Doi ◽  
M. Harada ◽  
M. Iinuma ◽  
...  
Keyword(s):  
Parity Violation ◽  
Time Reversal ◽  
Slow Neutron ◽  
Time Reversal Invariance ◽  
Neutron Absorption ◽  
Reversal Invariance

scholarly journals Coherent parity violation

1976 ◽  
Vol 54 (5) ◽  
pp. 568-574 ◽  
Author(s):  
Gabriel Karl
Keyword(s):  
Optical Activity ◽  
Parity Violation ◽  
Rotatory Power ◽  
Forward Scattering ◽  
Elementary Level ◽  
Neutron Beams ◽  
Massive Particles ◽  
Order Of Magnitude ◽  
Magnitude Estimates

Recent theoretical speculations about parity violating effects in the forward scattering of massless and massive particles are reviewed at an elementary level. These phenomena are analogous to optical activity, whose history is also briefly reviewed. Order of magnitude estimates for the rotatory power are presented, and the feasibility of experiments with neutron beams is discussed.

Neutron-Gamma Discrimination Using Zero-Crossing Method for BC454 Boron Loaded Plastic Scintillator

2010 ◽  
Author(s):  
Dong Wang ◽  
Bin He ◽  
Quanhu Zhang
Keyword(s):  
Gamma Rays ◽  
Cross Sections ◽  
Plastic Scintillator ◽  
Detection Efficiency ◽  
Discrimination Performance ◽  
Slow Neutron ◽  
Fast Neutrons ◽  
Zero Crossing ◽  
High Detection Efficiency ◽  
Slow Neutrons

Boron loaded plastic scintillator could detect both fast neutrons (thanks to hydrogen) and slow neutrons (thanks to 10B). The large cross sections of both reactions lead to high detection efficiency of incident neutrons. However, gamma rays must be rejected first as the scintillator is also sensitive to them. In the present research zero crossing method was used to test neutron-gamma discrimination performance of BC454 boron loaded plastic scintillator. Three contrast experiments were carried out and different thermalization degrees lead to different time spectra in the MCA. Further analysis proved that three Gaussian curves could be used to fit the spectra; they corresponded to gamma rays, fast neutrons and slow neutrons respectively. The slow neutron curve could be clearly separated from the gamma curve. Discrimination performance for fast neutrons became poor, but their peaks could also be separated.

scholarly journals Neutron interferometry, fifth force and axion like particles

2021 ◽  
Vol 81 (12) ◽  
Author(s):  
A. Capolupo ◽  
S. M. Giampaolo ◽  
A. Quaranta
Keyword(s):  
Magnetic Fields ◽  
Neutron Beam ◽  
Phase Difference ◽  
Neutron Interferometry ◽  
Fifth Force ◽  
Neutron Beams ◽  
Detection Strategy ◽  
Interferometric Measurement ◽  
The Future

AbstractWe propose a new possible detection strategy to reveal the fermion–fermion interaction mediated by axions and axion-like particles, based on interferometric measurement of neutron beams. We consider an interferometer in which the neutron beam is split in two sub-beams propagating in regions with differently oriented magnetic fields. The beam paths and the strength of the magnetic fields are set in such a way that the phase difference depends only on the axion-induced interaction. The resulting phase difference is directly related to the presence of axions. Our results show that such a phase might represent, in the future, a tool to probe the existence of axions and axion-like particles or a fifth force with interferometry.

XII.—The Hexapole Magnet as a Velocity Selector and Polarizer for Neutral Spin-½ Particles

1969 ◽  
Vol 68 (2) ◽  
pp. 158-184 ◽  
Author(s):  
H. M. Brash ◽  
D. M. Campbell ◽  
P. S. Farago ◽  
A. G. A. Rae ◽  
H. Chr. Siegmann ◽  
...  
Keyword(s):  
Particle Velocity ◽  
Neutral Atom ◽  
Slow Neutron ◽  
Neutron Beams ◽  
Atomic Beams ◽  
System Geometry

SynopsisThe general paraxial particle-optic properties of the hexapole field are summarized and lens formulae derived. Formulae are given for the transmission as a function of particle velocity and system geometry for geometries appropriate to the case of neutral atom beams and of slow neutron beams respectively. These formulae are used to evaluate the hexapole magnet as a velocity selector and polarizer for atomic beams and as a spin polarizer for neutron beams. Some experimental observations on potassium beams are quoted in support of the theory.

The LEP machine: present and future

1991 ◽  
Vol 336 (1642) ◽  
pp. 191-200 ◽  
Keyword(s):  
First Year ◽  
Polarized Beams ◽  
The Future ◽  
The Status ◽  
Design Value ◽  
Major Factors

A description is given of the status of commissioning of the LEP collider from the first injection in July 1989 with first collisions for physics about a month later to the first year of operation. During this time the LEP luminosity has reached more than half of the design value and more than 900 000 Z° particles have been generated, detected and analysed. The major factors related to each significant improvement in performance are reported. The present day limitations to performance are analysed, and the foreseen improvements aimed at raising the performance are discussed. The future possible LEP upgrades are outlined; the approved energy upgrade, studies to increase the luminosity by increasing the number of bunches, and studies aimed at producing transversely and longitudinally polarized beams for physics.

POLARIZED BEAMS IN THE HIGH-ENERGY STORAGE RING OF THE FUTURE GSI PROJECT

Spin 2004 ◽  
2005 ◽  
Author(s):  
A. LEHRACH ◽  
R. MAIER ◽  
D. PRASUHN ◽  
I. KOOP ◽  
A. OTBOYEV ◽  
...  
Keyword(s):  
Energy Storage ◽  
Storage Ring ◽  
High Energy ◽  
Polarized Beams ◽  
The Future ◽  
High Energy Storage
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