EXCITED STATES OF B$sup 1$$sup 3$

Journal Article · Tue Dec 15 04:00:00 EST 1959 · Physical Review (U.S.) Superseded in part by Phys.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.116.1583· OSTI ID:4185301

Morrison, G C; Galey, J A

The energy levels in B/sup 13/ up to an excitation energy of 6 Mev were investigated by means of the reaction Li/sup 7/ (Li/sup 7/,p)B/sup 13/ at an energy of 2 Mev for the incident Li/sup 7/ ions. Selection and identification of the outgoing protons in the presence of deuterons, tritons, and alpha particles emitted in competing reactlons is achieved with a proportional counter-C sI(TI) scintillation counter telescope system which gives a measure of the dE/dx and E of the emitted particle. From the observed energy spectrum of protons emitted at 90 deg , the Q-value of the reaction leading to the ground state of B/sup 13/ was determined to be 5.97 plus or minus 0.05 Mev in agreement with a previous measurement by Norbeck, and the energy of excitation of the first four levels in B/sup 13/ were determined to be 3.70 plus or minus 0.05 Mev, 4.16 plus or minus 0.05 Mev, 5.05 plus or minus 0.08 Mev, and 5,5 plus or minus 0.1 Mev. At 90 deg in the laboratory system the relative intensities of the proton groups leading to the ground state and first four excited states are in the ratios of 1.0:2.6:0.8: 1.6: 1.0, respectively. (auth)

• Research Organization: Univ. of Chicago
• NSA Number: NSA-14-010084
• OSTI ID: 4185301
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 116; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALPHA PARTICLES
ANGULAR DISTRIBUTION
BINDING ENERGY
BORON 13
BRANCHING RATIO
CESIUM IODIDES
COINCIDENCE METHODS
DECAY
DEUTERONS
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITATION
ION BEAMS
LITHIUM
LITHIUM 7
LOSSES
MEASURED VALUES
NUCLEAR REACTIONS
PHYSICS
PROPORTIONAL COUNTERS
PROTONS
Q-VALUE
SCINTILLATION COUNTERS
SPECTRA
THALLIUM
TRITONS