A system for measurement of total body calcium in vivo has been developed with the use of
total body neutron activation analysis and total body counting. The precision for measuring …

Using total body neutron activation analysis (TBNA) and total body counting, a technique
has been established to quantitate body calcium in grams with an estimated accuracy of 5.2 …

METHODS Fast neutrons (14 MeV) are produced by a neu tron generator* placed 5 m in front
of a patient irradiation enclosure. The enclosure is an aluminum water tank, 213 cm high, …

Purity enhancement of reagents is a requirement for the preparation of geological samples
that are introduced into the University of Washington Thermal Ionization Mass Spectrometer. …

Measurements of exhaled 37-Ar produced by total-body neutron irradiation of 40-Ca were
used to determine total-body calcium in 16 human subjects. There was a good correlation …

A simple method for making thin 3 μg/cm 2 carbon stripper foils for heavy ion bombardment
and accelerator radiochronology is described along with a simple method for stripper foil …

Selenium foils 600–6000 μg/cm 2 thick with a 10 μg/cm 2 carbon coating on both sides were
prepared by evaporation. The selenium was then converted from the red amorphous state …

A technique is described for preparing beryllium metal samples from beryllium oxide for use
in accelerator ion sources. These samples are used to measure minute 10 Be/9 Be ratios for …

The results of thick target (p, n) and (α, n) yield measurements are relevant to current problems
in nuclear astrophysics or nuclear reactor operations. The large neutron detection system …

RESULTS The combined data for the excretion of 37Ar at various times after activation from
the 16 patients are shown in Fig. 1. On the vertical axis the 37Ar excretion is indicated as a …