Neutron Capture Cross Sections of ^234U and ^151Sm Measured at LANSCE.

Details Neutron Capture Cross Sections of ^234U and ^151Sm Measured at LANSCE. Neutron Capture Cross Sections of ^234U and ^151Sm Measured at LANSCE.

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.x7014r&link_type=abstract

American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As

Astronomy and Astrophysics

Astrophysics

Scientific paper

The neutron capture cross section of radioactive and rare stable isotopes are needed both for the improved interpretation of historical nuclear weapons test data and the interpretation of isotopic distributions from s-process and r-process nucleosynthesis. ^151Sm is an important s-process branch point. Accurate cross sections in the energy range from 1 keV to 100 keV are needed to model the production of ^151Eu and ^153Eu by ^13C(α, n)^16O neutrons (8 keV) and ^22Ne(α, n) ^25Mg neutrons (30 keV) in asymptotic giant branch, AGB, stars. The 90 y beta decay halflife makes the ^151Eu abundance sensitive to ^22Ne burning that is believed to occur during episodes of convection lasting about 100 years. The neutron capture cross section of ^151Sm, and ^234U were measured by neutron time-of-flight on the newly constructed flight path 14 at the Lujan Center of the Los Alamos Neutron Science Center, LANSCE. The excitation functions were determined over the energy range from 1.0 eV up to 100 keV. Capture gamma rays were detected using a pair of deuterated benzene scintillators. The pulse height weighting method was applied. The results of these measurements will be presented.

Affiliated with

Also associated with

No associations

Rating

Neutron Capture Cross Sections of ^234U and ^151Sm Measured at LANSCE. 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 Neutron Capture Cross Sections of ^234U and ^151Sm Measured at LANSCE., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutron Capture Cross Sections of ^234U and ^151Sm Measured at LANSCE. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1535083