ADDENDUM: Neutron Time Interval Distributions with Background Neutrons

Neutrons and Neutron Generators

This article was originally intended as a brief introduction to the article by Richard Hull on the Farnsworth/Hirsch “fusor.” However, as there has been some interest by a number of subscribers in neutron generators, I decided to provide a somewhat more lengthy tutorial on the reactions that produce neutrons, some practical applications of neutrons, and a few of the various types of devices tha...

Multiple-wavelength neutron holography with pulsed neutrons

Local structures around impurities in solids provide important information for understanding the mechanisms of material functions, because most of them are controlled by dopants. For this purpose, the x-ray absorption fine structure method, which provides radial distribution functions around specific elements, is most widely used. However, a similar method using neutron techniques has not yet b...

Neutron lifetime measured with stored ultracold neutrons.

First Measurement of the Neutron β-Asymmetry with Ultracold Neutrons

R. W. Pattie Jr., 2 J. Anaya, H. O. Back, 2 J. G. Boissevain, T. J. Bowles, L. J. Broussard, R. Carr, D. J. Clark, S. Currie, S. Du, B. W. Filippone, P. Geltenbort, A. Garćıa, A. Hawari, K. P. Hickerson, R. Hill, M. Hino, S. A. Hoedl, 9 G. E. Hogan, A. T. Holley, T. M. Ito, 5 T. Kawai, K. Kirch, S. Kitagaki, S. K. Lamoreaux, C.-Y. Liu, J. Liu, M. Makela, 11 R. R. Mammei, J. W. Martin, 12 D. Mel...

Testing Time Reversal Invariance with Cold Neutrons

CP violation is implemented in the Standard Model (SM) of particle physics via a non-trivial phase in the Cabbibo-Kobayashi-Maskava matrix 1. Dedicated experiments and facilities have been built to check the predictions of the SM for CP violation, e.g. in the Kaon or the B meson sectors. Up to now, no significant deviations have been found. However, the CP violation implemented in the SM is ins...