Difference between revisions of "Column of Water Length"
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| Line 3: | Line 3: | ||
e <sup>-n σ t </sup> | e <sup>-n σ t </sup> | ||
| − | <math>n = \frac{atoms}{cm ^{3}} => \frac{ \frac{g}{cm^{2}} }{ \frac{g}{mol}} \times | + | <math>n = \frac{density}{weight(mols)} \times N = \frac{atoms}{cm^{3}}</math> |
| + | |||
| + | <math>n = \frac{atoms}{cm ^{3}} => \frac{ \frac{g}{cm^{2}} }{ \frac{g}{mol}} \times \frac{atoms}{mol} => \frac{atoms}{cm^{3}}</math> | ||
Revision as of 14:56, 16 July 2008
Column of Water Needed to Cut Photon Count in Half at 10 MeV
e -n σ t