bismuth $($B$1).$

Suppose that a vanadium filter is used to produce an intensity ratio of $CrK$ to $CrK$ of $\frac{300}{1}$ in the filtered beam. Calculate the thickness of the filter and the absorption factor for the $CrK$ and $CrK$ lines.

Data:

$I_o\frac{CrK}{I_o}(CrK)=8\mathrm{.}5$

Density of Vanadium $=6\mathrm{.}09\frac{g}{c}{m}^3$

Mass absorption coef. for $K$ by $V=75\mathrm{.}06c\frac{m^2}{g}$

Mass absorption coef. for $CrK$ by $V=501\mathrm{.}0c\frac{m^2}{g}$