TY - JOUR
T1 - Production of selected cosmogenic radionuclides by muons
T2 - 2. Capture of negative muons
AU - Heisinger, B.
AU - Lal, D.
AU - Jull, A. J.T.
AU - Kubik, P.
AU - Ivy-Ochs, S.
AU - Knie, K.
AU - Nolte, E.
N1 - Funding Information:
This work was supported by DFG (German Research Council) and BMBF (Federal Ministry for Education and Research). We would like to thank J. Wentz (Research Center Karlsruhe, Institute of Nuclear Physics) for helpful information on recent results on cosmic rays. [AH]
PY - 2002
Y1 - 2002
N2 - We have determined the production yields for radionuclides in Al2O3, SiO2, S, Ar, K2SO4, CaCO3, Fe, Ni and Cu targets, which were irradiated with slow negative muons at the Paul Scherrer Institute in Villigen (Switzerland). The fluences of the stopped negative muons were determined by measuring the muonic X-rays. The concentrations of the long-lived and short-lived radionuclides were measured with accelerator mass spectrometry (AMS) and γ-spectroscopy, respectively. Special emphasis was put on the radionuclides 10Be, 14C, and 26Al produced in quartz targets, 26Al in Al2O3 and S targets, 36Cl in K2SO4 and CaCO3 targets, and 53Mn in Fe2O3 targets. These targets were selected because they are also the naturally occuring target minerals for cosmic ray interactions in typical rocks. We also present results of calculations for depth-dependent production rates of radionuclides produced after cosmic ray μ- capture, as well as cosmic ray-induced production rates of geologically relevant radionuclides produced by the nucleonic component, by μ- capture, by fast muons and by neutron capture.
AB - We have determined the production yields for radionuclides in Al2O3, SiO2, S, Ar, K2SO4, CaCO3, Fe, Ni and Cu targets, which were irradiated with slow negative muons at the Paul Scherrer Institute in Villigen (Switzerland). The fluences of the stopped negative muons were determined by measuring the muonic X-rays. The concentrations of the long-lived and short-lived radionuclides were measured with accelerator mass spectrometry (AMS) and γ-spectroscopy, respectively. Special emphasis was put on the radionuclides 10Be, 14C, and 26Al produced in quartz targets, 26Al in Al2O3 and S targets, 36Cl in K2SO4 and CaCO3 targets, and 53Mn in Fe2O3 targets. These targets were selected because they are also the naturally occuring target minerals for cosmic ray interactions in typical rocks. We also present results of calculations for depth-dependent production rates of radionuclides produced after cosmic ray μ- capture, as well as cosmic ray-induced production rates of geologically relevant radionuclides produced by the nucleonic component, by μ- capture, by fast muons and by neutron capture.
KW - Cosmogenic elements
KW - Production
KW - Radio-active isotopes
KW - Rates
UR - http://www.scopus.com/inward/record.url?scp=0036317097&partnerID=8YFLogxK
U2 - 10.1016/S0012-821X(02)00641-6
DO - 10.1016/S0012-821X(02)00641-6
M3 - Article
AN - SCOPUS:0036317097
SN - 0012-821X
VL - 200
SP - 357
EP - 369
JO - Earth and Planetary Science Letters
JF - Earth and Planetary Science Letters
IS - 3-4
ER -