absolute polarization of thermal atomic hydrogen (H) and deuterium (D) beams is described.
The principle of measurement and the method of calibration are given. The polarimeter
measures the 4 (6) relative hyperfine population numbers of a thermal H (D) beam in the
region of 10 13atoms s− 1 to an absolute error of less than 0.01. The polarimeter has been
in continuous operation with the internal polarized hydrogen and deuterium gas target used …