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root/OpenMD/trunk/samples/water/ssdq/SSDQ.frc
Revision: 1958
Committed: Mon Dec 16 21:18:43 2013 UTC (12 years, 2 months ago) by gezelter
File size: 1561 byte(s)
Log Message:
Adding SSDQ model to test the electrostatics code

File Contents

# User Rev Content
1 gezelter 1958 begin Options
2     Name "SSDQ"
3     end Options
4    
5     begin BaseAtomTypes
6     //Name mass (amu)
7     SSDQ 18.0153
8     Cl- 35.4527
9     Na+ 22.98977
10     end BaseAtomTypes
11    
12     begin DirectionalAtomTypes
13     //Name I_xx I_yy I_zz (All moments in (amu*Ang^2)
14     SSDQ 1.7696 0.6145 1.1550
15     end DirectionalAtomTypes
16    
17     begin LennardJonesAtomTypes
18     //Name epsilon sigma
19     //SSDQ 0.152 3.16549
20     SSDQ 0.152 3.3
21     Cl- 0.100 4.445
22     Na+ 0.118 2.579
23     end LennardJonesAtomTypes
24    
25     begin ChargeAtomTypes
26     Cl- -1.0
27     Na+ 1.0
28     end ChargeAtomTypes
29    
30     begin MultipoleAtomTypes
31     // Atoms with both dipole and quadrupole moments:
32     //
33     // name dq phi theta psi dipole_moment Qxx Qyy Qzz
34     //
35     // Dipoles are given in units of Debyes.
36     //
37     // Note that Quadrupoles in OpenMD are *NOT* traceless.
38     //
39     // Quadrupole moments are given in units of 10^-26 esu cm^2 (also known as an
40     // esu centi-barn)
41     //SSDQ dq 0.0 0.0 0.0 2.64 -7.99 -4.27 -5.94
42     //SSDQ dq 0.0 0.0 0.0 2.95 -7.99 -4.27 -5.94
43     //SSDQ dq 0.0 0.0 0.0 2.12 -6.82667 -5.40667 -5.97667
44     //SSDQ dq 0.0 0.0 0.0 2.43 -6.99333 -5.18 -6.03667
45     //SSDQ dq 0.0 0.0 0.0 2.29 -6.61167 -5.57167 -6.02667
46     SSDQ dq 0.0 0.0 0.0 2.55 -7.04 -5.1667 -6.0033
47     end MultipoleAtomTypes