Cosmogenic activation in germanium and copper for rare event searches

Details Cosmogenic activation in germanium and copper for rare event searches Cosmogenic activation in germanium and copper for rare event searches

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aph....33..316c&link_type=abstract

Astroparticle Physics, Volume 33, Issue 5-6, p. 316-329.

Physics

Scientific paper

Experiments looking for rare events like the direct detection of dark matter particles or the nuclear Double Beta Decay are operated in deep underground locations, to suppress or very effectively reduce the effect of cosmic rays; but cosmogenic activation produced at sea level in detectors and other materials can become a serious hazard for them. Copper and germanium are very frequently used in this kind of experiments requiring an ultra-low radioactive background and therefore have been chosen as activation targets in this work. First, the excitation functions for relevant induced long-lived radioactive isotopes have been estimated; special care has been taken in using those calculations giving the best agreement with measured production cross-sections and in distinguishing production by neutrons or by protons when relevant and possible. Then, the corresponding rates of production of the nuclides in natural and enriched (86% 76Ge and 14% 74Ge) germanium and copper have been evaluated considering two different cosmic ray spectra. Comparison of the obtained activation yields at surface with all the known previous results (based either on calculations or experiments) has allowed to draw conclusions on the general methodology for evaluating cosmogenic activation.

Affiliated with

Also associated with

No associations

Rating

Cosmogenic activation in germanium and copper for rare event searches 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 Cosmogenic activation in germanium and copper for rare event searches, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmogenic activation in germanium and copper for rare event searches will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1347835