Determination of uranium and thorium in meteorites by the delayed neutron method

Delayed neutron measurements of U and Th in three meteorites yield the following values:

Bruderheim	U (ppb)	Th(ppb)
Bruderheim	$\text{14.5 ± 1.0}$	$\text{171 ± 65}$
Peace River	$\text{11.8 ± 0.7}$	$\text{96 ± 46}$
Stannern	$\text{220 ± 6}$	$\text{563 ± 190}$
Keywords:
本文献已被 ScienceDirect 等数据库收录！