TY - JOUR
T1 - The neutron spectrum of the Hiroshima A-bomb and the Dosimetry System 1986
AU - Rühm, W.
AU - Kato, K.
AU - Korschinek, G.
AU - Morinaga, H.
AU - Urban, A.
AU - Zerle, L.
AU - Nolte, E.
N1 - Funding Information:
This work was supported by the German Federal Ministry for Research and Technology (BMFT).
PY - 1990/12/2
Y1 - 1990/12/2
N2 - The radioisotope 41Ca produced by the Hiroshima A-bomb in a gravestone 107 m from the hypocenter was measured with accelerator mass spectrometry (AMS) at the Munich accelerator laboratory. The resonance integral for the reaction 40Ca(n,γ) 41Ca was determined to be Iγ = (0.22 ± 0.02) b. This, together with γ spectrometric data on 60Co, 152Eu and 154Eu and AMS data on 36Cl from the same gravestone permitted deduction of the neutron energy spectrum and fluence at this distance in Hiroshima. The derived spectrum is much harder than the spectrum used in the Dosimetry System 1986, DS86.
AB - The radioisotope 41Ca produced by the Hiroshima A-bomb in a gravestone 107 m from the hypocenter was measured with accelerator mass spectrometry (AMS) at the Munich accelerator laboratory. The resonance integral for the reaction 40Ca(n,γ) 41Ca was determined to be Iγ = (0.22 ± 0.02) b. This, together with γ spectrometric data on 60Co, 152Eu and 154Eu and AMS data on 36Cl from the same gravestone permitted deduction of the neutron energy spectrum and fluence at this distance in Hiroshima. The derived spectrum is much harder than the spectrum used in the Dosimetry System 1986, DS86.
UR - http://www.scopus.com/inward/record.url?scp=0008011114&partnerID=8YFLogxK
U2 - 10.1016/0168-583X(90)90476-B
DO - 10.1016/0168-583X(90)90476-B
M3 - Article
AN - SCOPUS:0008011114
SN - 0168-583X
VL - 52
SP - 557
EP - 562
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
IS - 3-4
ER -