Reaction Studies with Fast Neutrons (open access)

Reaction Studies with Fast Neutrons

"The modified accelerator performed well at voltages up to 200 kv, and construction of a 350-kv acceleration tube was initiated. An all-solid-state telescope was completed, and a (dE/dx x E) pulse multiplier was almost finished. These instruments will be used with a new analyzer to permit simultaneous recording of (n,p), (n,d), and (n,t) spectra. An analysis of previous data on LiT/sup 7/d, alpha) He/sup 5*/ yields alpha + n showed that the first He/sup 5/ excited state is at 2.6 plus or minus 0.4 Mev with a width of 4.0 plus or minus 1.0 Mev. The intensity of the excited state relative to that of the ground state was found to be 1.45 plus or minus 0.50. Preliminary angular distributions for the N/sup 14/ (n, alpha) B/sup 11/ and O/sup 16/ (n, alpha) C/sup 13/ reactions were obtained Modifications were made to the counters for these experiments, and electronic equipment associated with the counters and detectors was constructed. (D.C.W.) Aluminum targets evaporated under a variety of conditions all showed a Lewis peak on the thick-target gamma-ray yield curves over the Al/sup 27/(p, gamma) Si resonance reaction at 992 kev. The peaks of all targets prepared at pressures below 4 x …
Date: November 1, 1963
Creator: Maxson, D. R.
System: The UNT Digital Library