60Co dose calculator
$day $month $year: since 13 Jun 2003 $secs secs have passed
\n";
$c_doser=3.53*30*30/$dist/$dist; //rad/s al 13 Jun 2003 at dist
$dayz=1.0*$secs/60/60/24;
$doser=$c_doser*exp(-0.693* $dayz / (1925.1));
$dosesi=$doser*0.894;
$dosesipb=$dosesi*0.874775;
$time=10000/$doser/60/60;
$hr1=floor($time);
$mn1=floor( ($time - $hr1) * 60 );
$sc1=floor( ($time - ($hr1 + ($mn1/60) )) * 3600 );
$timesi=10000/$dosesi/60/60;
$hr2=floor($timesi);
$mn2=floor( ($timesi - $hr2) * 60 );
$sc2=floor( ($timesi - ($hr2 + ($mn2/60) )) * 3600 );
$timesipb=10000/$dosesipb/60/60;
$hr3=floor($timesipb);
$mn3=floor( ($timesipb - $hr3) * 60 );
$sc3=floor( ($timesipb - ($hr3 + ($mn3/60) )) * 3600 );
?>
At that date and distance the dose rate is:
- rd/s in air for water ( krd/h)
- rd/s in air for silicon ( krd/h)
- rd/s in air for silicon w/ shield ( krd/h)
This means that, to achieve 10 krad, you need to wait
- in air for water
( hrs)
- hrs in air for silicon
( hrs)
- hrs in air for silicon w/ shield
( hrs)
This page is mantained by Riccardo Rando