Computer Science
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996gecoa..60.4593b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 60, Issue 22, pp.4593-4597
Computer Science
2
Scientific paper
Results are reported for cumulative thick-target yields of 126,128,130 Xe upon irradiating metallic tellurium of natural isotopic composition with protons of ~3.7 MeV, 10 MeV, 14 MeV, and 17 MeV, respectively. Combined with existing data we find, for a spectrum of solar protons as derived from lunar studies (R o = 100 MV), a spectrum-averaged yield ( 126 Xe) Te = 4.2 × 10 -4 126 Xe atoms per incident proton and yield ratios and . In order to account for the excesses of 126 Xe occasionally observed, up to 3.0 × 10 -11 cm 3 STP/g in bulk lunar samples and 250 times smaller ones in stone meteorites, the product of tellurium concentration, in ppm, times the proton dose must have been 2 × 10 18 cm -2 and 8 × 10 15 cm -2 respectively. If the irradiated matter was a surface layer of a regolith, the 126 Xe thus produced will be diluted, by mixing with deeper layers, to an extent that depends on time of exposure and rate of "gardening." It remains to be shown, by analysing suitable samples for both xenon and tellurium, whether this production mode can quantitatively account for the excesses of 126 Xe that are occasionally observed in lunar samples and gas-rich meteorites.
Begemann Friedrich
Mathew K. J.
No associations
LandOfFree
On the production by solar protons of 126 Xe via Te (p,xn) reactions 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 On the production by solar protons of 126 Xe via Te (p,xn) reactions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the production by solar protons of 126 Xe via Te (p,xn) reactions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1148197