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11 changes: 5 additions & 6 deletions mcstas-comps/contrib/SpinWave_BCO.comp
Original file line number Diff line number Diff line change
Expand Up @@ -153,7 +153,7 @@ SHARE
qy = V2K * (vi_y - vf * vv_y);
qz = V2K * (vi_z - vf * vv_z);

Jq= 8 * j * cos (a1 * qx / 2) * cos (a2 * qy / 2) * cos (a3 * qz / 2);
Jq = 8 * j * cos (a1 * qx / 2) * cos (a2 * qy / 2) * cos (a3 * qz / 2);
J0 = 8 * j;
J1q = 2 * (ja * cos (qx * a1) + jb * cos (qy * a2) + jc * cos (qz * a3)) + 2 * (j_110 + j_110_prime) * cos (qx * a1) * cos (qy * a2);
J10 = 2 * (ja + jb + jc) + 2 * (j_110 + j_110_prime);
Expand All @@ -173,17 +173,17 @@ SHARE
omega_neutron = fabs (VS2E * (vi * vi - vf * vf)); /*Magnitude of energy transfer*/
if (coherence_flag == 0) {
if ((verbose == 2) && fabs (omega_magnon - omega_neutron) < 1e-3 && (vi > vf)) {
printf ("omega_q called with parameters vf= %g, vi=%g (%g %g %g) vv=(%g, %g, %g) q=(%g %g %g)\n", vf, vi, vi_x, vi_y, vi_z, vv_x, vv_y, vv_z, qx, qy, qz);
printf ("omega_q gives: J0 = %g , Jq = %g, J10 = %g, J1q = %g, D = %g\n", J0, Jq, J10, J1q, D);
printf ("in omega_q: q=(%g %g %g) omega_magnon=%g, omega_neutron=%g\n", qx, qy, qz, omega_magnon, omega_neutron);
printf ("omega_q called with parameters vf= %g, vi=%g (%g %g %g) vv=(%g, %g, %g) q=(%g %g %g)\n", vf, vi, vi_x, vi_y, vi_z, vv_x, vv_y, vv_z, qx, qy, qz);
printf ("omega_q gives: J0 = %g , Jq = %g, J10 = %g, J1q = %g, D = %g\n", J0, Jq, J10, J1q, D);
printf ("in omega_q: q=(%g %g %g) omega_magnon=%g, omega_neutron=%g\n", qx, qy, qz, omega_magnon, omega_neutron);
}
return (omega_magnon - omega_neutron);
} else { /*calculate coherence factor*/
if (FM_TAG == 0) {
coherence_factor = 2 * S * ((S * (J0 - Jq) - S * (J10 - J1q) - 2 * D * (S - 0.5)))
/ (omega_magnon + (2 * branch - 1) * (B * B2E + 2 * S * (j_110 - j_110_prime) * sin (qx * a1) * sin (qy * a2)));
if (verbose = 3) {
printf("Coherence factor = %g\n", coherence_factor);
printf ("Coherence factor = %g\n", coherence_factor);
}
} else {
coherence_factor = 2 * S;
Expand Down Expand Up @@ -577,7 +577,6 @@ TRACE
bose_factor, fabs (omega), coherence_factor);
}


} else {
ABSORB; // findroots returned junk
// Simply absorb if we can not hit, no fatal errors. (Typically indication of v_f==0)
Expand Down
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