NaI Detectors. Plastic Scintillator. Power. Neutron Generator. GPS. MAGNUS Slave Com. Master Com. E. W.
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At least five core samples 40 cm long are taken from each measurement site. The cores are divided into five sections, 5, 5, 10, 10,and 10 cm long and analyzed for, C, N, moisture, and bulk density.
Calibration Lines; NC-net counts in the carbon peak (a), CN-carbon net counts after interference correction (b).
CN = NC – Cascade – SEP
CN = NC – [Si(1.78)INS-(Si+Al)(1.78)TNC(LTINS/LTTNC)--[Si(4.43)TNC(LTINS/LTTNC]
INS Alpha prototype used for stationary and scanning field measurements.
Sandpits, 1.5x1.2x0.46 m3, for synthetic soil preparations.
Duke Forest calibration, the three sites; G-Grass,
P-Pine, and H-Hardwood were combined. The sits were covered with standing water and the solid fraction approached 30%.
Measurement sites at Duke Forest NC. Pits 40x40x40 cm3 were excavated for C analysis.
– 4.38 miles
– 3.6 mph
Montana wheat field and GPS trace of a scan, in addition three static measurements in the field were taken.
– 3.06 miles
– 2.4 mph
Maryland corn field and GPS trace of a scan, in addition three static measurements in the field were taken.
Beta prototype to be deployed in summer 2007
Inelastic Neutron Scattering, INS,
A Novel Non-Destructive Soil Carbon Analysis System; II – Characteristics
L. Wielopolski1, S. Mitra1,.
1Brookhaven National Laboratory, Environmental Sciences Department Upton, NY 11973
Instead of measuring the
difference between λi and λo to assess carbon in soil (Cs), measure Cs and assess lambdas.