Yb to Lu-177 Exposure
c Cell cards
1	6	-6.973	-1		$Yb source cell
2	7	-2.32	2 -3 		$inner wall
3	3	-0.00120484 1 -2 	$air inside box
4	1	-11.34	3 -4		$lead shielding
5	7	-2.32	4 -5		$outer wall
6	2	-1.0	-6		$ICRU sphere outside box
7	3	-0.00120484 5 6 -7	$air outside box
8	0		7 		$universe Void

c Surface Cards
1	rcc	0 0 -10  0 0 .025  .01	$source container
2	rpp	-10 10 -10 10 -10 10	$inner wall int
3	rpp	-11.5 11.5 -11.5 11.5 -11.5 11.5	$inner wall ext/lead interior
4	rpp	-15.5 15.5 -15.5 15.5 -15.5 15.5	$lead ext/outer wall int
5	rpp	-17 17 -17 17 -17 17	$outer wall ext
6	sph	32 0 0 15		$ICRU sphere outside outer wall
7	sph	0 0 0 60		$universe void

c Data Cards
MODE P E
c Lead for shielding
m1	82000	1
c ******************************************
c ICRU Soft Tissue, Four Component, density = 1.00 g/cm^3
m2	1001.70c      -0.101172  $tissue,       
	6000.70c      -0.111000       
	7014.70c      -0.026000 8016.70c      -0.761828
c ICRP Air, density = 1.20484E-3 g/cm^3 
m3	7014.70c     -0.755636  $air (US S. Atm at sea level)       
	8016.70c     -0.231475 18000.35c     -0.012889
c *************************************************
c Concrete, density = 2.35g/cm^3 
m4	1001.70c     -0.005558  $concrete (ordinary with ENDF-VI)       
	8016.70c     -0.498076 11023.70c     -0.017101 12024.70c     -0.001999
	12025.70c    -0.000264 12026.70c     -0.000302 13027.70c     -0.045746       
	14028.70c    -0.289486 14029.70c     -0.015181 14030.70c     -0.010425       
	16032.70c    -0.001216 16033.70c       -1e-005 16034.70c     -5.7e-005       
	19039.70c     -0.01788 19040.70c       -2e-006 19041.70c     -0.001357       
	20040.70c     -0.08019 20042.70c     -0.000562 20043.70c      -0.00012       
	20044.70c     -0.00188 20046.70c       -4e-006 20048.70c     -0.000186       
	26054.70c    -0.000707 26056.70c      -0.01139 26057.70c     -0.000265       
	26058.70c    -3.6e-005 
c ***********************************************************
c PMMA, density 1.19 g/cm^3
m5	1000	-0.0850538
	6000	-0.599848
	8000	-0.319614
c ***************************************************************
c YB-177, density 6.973 g/cm^3
m6	70177	1
c ************************************************************
c Drywall, denisty 2.32 g/cm^3
m7	1000	-0.023418
	8000	-0.0557555
	16000	-0.186251
	20000	-0.232776
c ****************************************************************
c Importance
c 	1 2 3 4 5 6 7 8
imp:p	1 1 1 1 1 1 1 0
imp:e	1 1 1 1 1 1 1 0
c ***************************************************************
c Forced Collisions
FCL:P 0 0 0 0 0 -1 0 0
c source definition
SDEF POS= 0 0 -9.9995 CEL=1 PAR=SD ERG=D1
SP1 -7 6.876e11
phys:p 100 0 0 0 0
F14:P	6 $average photon flux in cell 6, outside box
F16:P	6 $photon energy deposition in cell 6, outside box
DF16 IU=1 FAC=-3 IC=10
c F12:P	5 $average photon flux on outside of box
nps 200000 $stop after 200 mil particles