LIFETIMES OF THE FIRST EXCITED STATES OF F$sup 17$ AND O$sup 1$$sup 7$

Journal Article · Sat Oct 01 04:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys.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.120.162· OSTI ID:4124312

Kane, J V; Pixley, R E; Schwartz, R B; Schwarzschild, A

Using the gamma - gamma coincidence method and an electronic time-to- amplitude converter, the lifetimes of the first excited states in the mirror pair O/sup 17/(0.87 Mev) and F/sup 17/(0.50 Mev) were measured. The reactions initiating the gamma cascades were O/sup 16/(d,p)O/sup 17/ and direct proton capture in O/sup 16/. The time resolution of the coincidence circuit was good enough to allow the lifetime measurements to be made by direct observation of the exponential decay, rather than by measurement of the centroid shift. The measured mean life of O/sup 17/ is (2.55 plus or minus 0.13) x 10/sup -10/ sec; the measured mea n life of F/sup 17/ is (4.45 plus or minus 0.22) x 10/sup -10/ sec. Both of these re sults are in reasonable agreement with earlier, less accurate values. (auth)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-15-000948
• OSTI ID: 4124312
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 120; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

COINCIDENCE METHODS
FLUORINE
LIFETIME
OXYGEN
PHOTONS
PHYSICS
PROTONS