ALPHA PARTICLES FROM Be$sup 9$ AND C$sup 12$ BY 25-Mev ALPHA-PARTICLE BOMBARDMENT

Journal Article · Thu Feb 15 04:00:00 EST 1962 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.125.1339· OSTI ID:4795697

Brown, L B; Knowles, H B

Alpha-particle spectra from thin beryllium and carbon targets were taken at 47.5 deg laboratory angle and an alpha energy of 25.41 Mev. The center-of- mass spectra of both nuclei indicate that the four-body reactions Be/sup 9/( alpha ;3 alpha , n) and C/sup 12/( alpha ;4 alpha ) are greatly preferred over the three-body reactions Be/sup 9/( alpha ; alpha ,n)Be/sup 8/ and C/sup 12/( alpha ;2 alpha )Be/sup 8/. Several in elastic levels of both nuclei appear, and the recoil-decay alpha particles from the 9.61-Mev level of C are seen. The Fermi statistical model is invoked in an attempt to establish that the multibody reactions are reasonably representative of the proportions of the two- and three- cluster configurations in the ground states of the two nuclei, and that the three- cluster configurations are preferred. (auth)

• Research Organization: Univ. of California, Livermore
• NSA Number: NSA-16-014007
• OSTI ID: 4795697
• Report Number(s): UCRL-6515; 0031-899X
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 125; ISSN PHRVA
• Country of Publication: United States
• Language: English

Related Subjects

ALPHA BEAMS
ALPHA DECAY
ALPHA PARTICLES
BERYLLIUM 9
CARBON 12
CONFIGURATION
ENERGY LEVELS
FERMI MODEL
INTERACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PHYSICS
PIONS
SPECTRA
TARGETS