Generating Isomeric Reaction Groupwise Cross-Sections without MT Duplication Error

[eitan-weinstein]

Hello,

I am trying to follow the below instructions for creating groupwise cross-sections for specific excitation reactions with reference to MF = 10.

This is what my GROUPR input is:

groupr/
 21 25 0 31/
 7531 17 0 11 0 1 1 1/
 "75-Re-187 for TENDL 2017"/
 293.16
 0/
 3 4 "(z,n)" /
 3 11 "(z,2nd)" /
 40751860 16 "(z,2n), M=0"
 40751864 16 "(z,2n), M=4"
 3 17 "(z,3n)" /
 3 22 "(z,na)" /
 40731820 24 "(z,2na), M=0"
 40731821 24 "(z,2na), M=1"
 3 25 "(z,3na)" /
 3 28 "(z,np)" /
 3 29 "(z,n2a)" /
 40741850 32 "(z,nd), M=0"
 40741856 32 "(z,nd), M=6"
 3 33 "(z,nt)" /
 3 34 "(z,nh)" /
 40751840 37 "(z,4n), M=0"
 40751845 37 "(z,4n), M=5"
 40741850 41 "(z,2np), M=0"
 40741856 41 "(z,2np), M=6"
 3 42 "(z,3np)" /
 3 44 "(z,n2p)" /
 40721820 45 "(z,npa), M=0"
 40721829 45 "(z,npa), M=9"
 3 51 "(z,n1)" /
 3 52 "(z,n2)" /
 3 53 "(z,n3)" /
 3 54 "(z,n4)" /
 3 55 "(z,n5)" /
 3 56 "(z,n6)" /
 3 57 "(z,n7)" /
 3 58 "(z,n8)" /
 3 59 "(z,n9)" /
 3 60 "(z,n10)" /
 3 61 "(z,n11)" /
 3 62 "(z,n12)" /
 3 63 "(z,n13)" /
 3 64 "(z,n14)" /
 3 65 "(z,n15)" /
 3 66 "(z,n16)" /
 3 67 "(z,n17)" /
 3 68 "(z,n18)" /
 3 69 "(z,n19)" /
 3 70 "(z,n20)" /
 3 71 "(z,n21)" /
 3 72 "(z,n22)" /
 3 73 "(z,n23)" /
 3 74 "(z,n24)" /
 3 75 "(z,n25)" /
 3 76 "(z,n26)" /
 3 77 "(z,n27)" /
 3 78 "(z,n28)" /
 3 79 "(z,n29)" /
 3 80 "(z,n30)" /
 3 203 "(z,Xp)" /
 3 204 "(z,Xd)" /
 3 205 "(z,Xt)" /
 3 206 "(z,Xh)" /
 3 207 "(z,Xa)" /
 3 91 "(z,nc)" /
 3 102 "(z,g)" /
 3 103 "(z,p)" /
 3 104 "(z,d)" /
 40741850 105 "(z,t), M=0"
 40741856 105 "(z,t), M=6"
 3 106 "(z,h)" /
 3 107 "(z,a)" /
 3 108 "(z,2a)" /
 3 111 "(z,2p)" /
 3 112 "(z,pa)" /
 0/
 0/
stop

After running this, however, I am getting the following messages when trying to parse the output with ENDFtk:

[error] Found a duplicate section for MT16
[info] Current position: MAT7531 MF3 MT16 at line 296
[info] Trouble encountered while constructing an ENDF tree file
[info] Trouble encountered while constructing a material tree.
[info] Material number (MAT): 7531
[info] Trouble encountered while constructing a tape syntax tree

Given that with the input that I am running, I would be expecting multiple different reaction pathways for a given MT (e.g. MT = 16 to ground or to the fourth excited state), how should I avoid this duplicate error to be able to get the groupwise cross-sections for both reaction pathways?

Thank you for any tips you might be able to offer!