Lorentz polarization factors for precession angles of 10°, 15° and 21°

Polarization Precession

Deduce an expression for the rate of precession of the spin polarization unit vector P̂ of a relativistic charged particle in laboratory electric and magnetic fields E and B. The polarization vector is to be measured in the so-called comoving rest frame of the particle obtained by boosting from the lab frame along the direction l̂ that is tangent the the particle’s laboratory trajectory, and whos...

The Lorentz Factor for the Buerger Precession Method

10 health stories that mattered: Nov. 15-21.

Opening angles , Lorentz factors and confinement of X - ray binary jets

We present a collation of the available data on the opening angles of jets in X-ray binaries, which in most cases are small (10 •). Under the assumption of no confinement , we calculate the Lorentz factors required to produce such small opening angles via the transverse relativistic Doppler effect. The derived Lorentz factors, which are in most cases lower limits, are found to be large, with a ...

Microtesla SABRE Enables 10% Nitrogen-15 Nuclear Spin Polarization

Parahydrogen is demonstrated to efficiently transfer its nuclear spin hyperpolarization to nitrogen-15 in pyridine and nicotinamide (vitamin B(3) amide) by conducting "signal amplification by reversible exchange" (SABRE) at microtesla fields within a magnetic shield. Following transfer of the sample from the magnetic shield chamber to a conventional NMR spectrometer, the (15)N NMR signals for t...