Measurement of the Mean Lifetime for the 6.79 MeV Subthreshold State in ^15O Using Doppler Shift Attenuation

Details Measurement of the Mean Lifetime for the 6.79 MeV Subthreshold State in ^15O Using Doppler Shift Attenuation Measurement of the Mean Lifetime for the 6.79 MeV Subthreshold State in ^15O Using Doppler Shift Attenuation

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dnp..b406b&link_type=abstract

American Physical Society, Division of Nuclear Physics Meeting, October 28-31, 1998 Santa Fe, New Mexico, abstract #B4.06

Physics

Nuclear Physics

Scientific paper

Proton radiative capture on ^14N is the slowest reaction in the CN-cycle. Therefore, in a massive main sequence star whose energy is generated primarily through the CN-cycle, this reaction has the role of setting the energy generation rate for the star and consequently the time scale for its evolution. In addition, the rate of the ^14N(p,γ)^15O reaction is a significant variable in the width of the globular cluster age distribution derived from computer models of stellar evolution. The lower limit of this distribution is thought to be a firm estimate for the lower limit on the age of the universe. The extrapolation of existing S-factor data down to stellar energies is complicated by interference effects from the 6.79 MeV subthreshold level in ^15O. The situation could be improved by a direct determination of the mean lifetime of this state. We have attempted such a measurement using the Doppler Shift Attenuation Method (DSAM). Results and implications will be presented.

Affiliated with

Also associated with

No associations

Rating

Measurement of the Mean Lifetime for the 6.79 MeV Subthreshold State in ^15O Using Doppler Shift Attenuation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurement of the Mean Lifetime for the 6.79 MeV Subthreshold State in ^15O Using Doppler Shift Attenuation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement of the Mean Lifetime for the 6.79 MeV Subthreshold State in ^15O Using Doppler Shift Attenuation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1720831