THE AVERAGE ENERGY AND ANGULAR MOMENTUM REMOVED FROM Dy COMPOUND NUCLEI BY NEUTRONS AND PHOTONS

Technical Report · Tue Jan 01 04:00:00 EST 1963

DOI:https://doi.org/10.2172/4626556· OSTI ID:4626556

Alexander, J M; Simonoff, G N

Excitation functions are presented for many heavy-ioninduced (HI) reactions that produce Dy/sup 149/, Dy/sup 150/, and Dy/sup 151/. Projectiles were C/sup 12/, N/sup 14/, N/sup 16/, O/sup 16, O/sup 18/, F/sup 1 9/, and Ne/sup 20/ of 4 to 10.4 Mev per amu. The reactions studied are all of the type (HI,xn), where x ranges from 3 to 9. A large fraction of the total reaction cross section is accounted for by these (HI,xn) reactions --9/10 at approximately 45 Mev to 1/2 at approximately 105 Mev. An analysis to obtain the energy of the first neutron is presented. Comparison of the results of this analysis to angular-distribution studies suggests that each neutron removes 2 to 4 h units of angular momentum. The relation between the average total photon energy and the average angular momentum removed by photons is obtained. Comparison with the average photon energy from other work leads to an average of 1.8 plus or minus 0.6 h for the angular momentum removed by each photon. The excitation energy E/sub j/ of the lowest-lying state of spin J was estimated. (auth)

• Research Organization: California Univ., Berkeley, CA (US). Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-17-041871
• OSTI ID: 4626556
• Report Number(s): UCRL-10541
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR MOMENTUM
CARBON 12
CROSS SECTIONS
DYSPROSIUM 149
DYSPROSIUM 150
DYSPROSIUM 151
DYSPROSIUM COMPOUNDS
ENERGY RANGE
FLUORINE 19
ION BEAMS
MEV RANGE
MOMENTUM
NEON 20
NEUTRON BEAMS
NITROGEN 14
NITROGEN 15
NUCLEAR REACTIONS
OXYGEN 16
OXYGEN 18
PHOTONS
PHYSICS