Search for the β^+ decay of ^54Mn

Details Search for the β^+ decay of ^54Mn Search for the β^+ decay of ^54Mn

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aps..dnp..cd03w&link_type=abstract

American Physical Society, Division of Nuclear Physics Meeting, October 5-8, 1997, abstract #CD.03

Physics

Nuclear Physics

Scientific paper

The nucleus ^54Mn has attracted interest as a potential chronometer for cosmic ray transport through the galaxy. In cosmic rays, the usual decay mode of ^54Mn, through electron capture (EC) to the first excited state of ^54Cr at 835 keV, is suppressed as the nuclei are generally fully stripped of their electrons. Terrestrial measurements have placed only upper limits on the branching ratios for the doubly forbidden β^- and β^+ decays. We have used the APEX spectrometer at Argonne National Laboratory to search for the β^+ decay branch of ^54Mn. A 660 μCi source of chemically purified ^54Mn was counted for approximately two weeks using APEX. The high sensitivity of the spectrometer and its excellent background suppression capabilities make it ideal for this measurement. Preliminary results of our search will be presented, and compared to astrophysical predictions based on recent satellite isotope abundance measurements, which suggest a β^+ branch near 1×10-9. Work supported by the ^1U. S. Department of Energy, Nuclear Physics Division under contract W-31-109-Eng-38, ^2The National Science Foundation and ^3ANL-U. of Chicago Grant 95-021.

Affiliated with

Also associated with

No associations

Rating

Search for the β^+ decay of ^54Mn 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 Search for the β^+ decay of ^54Mn, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Search for the β^+ decay of ^54Mn will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1770008