Capture Reaction

Generate FRESCO input files for radiative capture reactions with electromagnetic transitions

Upload Existing Input File

Supported formats: .in, .inp, .txt

General FRESCO Parameters

Dynamically manage parameters between General and Advanced sections. Upload a FRESCO file to automatically populate parameters.

General FRESCO Parameters 0
Advanced FRESCO Parameters 0

Reaction Partitions

Initial Partition (Projectile + Target)

Projectile
Target

Final Partition (Gamma + Residual)

Photon
Residual Nucleus

Electromagnetic Transition

Optical Potential Parameters

Nuclear Potential Form Factor Information

Note: TYPE=0 (Coulomb potential) is handled separately in the Coulomb potential section above. The nuclear potential options are for TYPE=1 and higher.

Shape Definitions:

  • Volume potentials (TYPE=1,8,15): R = P2*CC, RH = (r-R)/P3, E = exp(-(r-R)/P3)
  • Surface potentials (TYPE=2): First derivative forms, normalized to -1 when E=1
  • Spin-orbit potentials (TYPE=3,4): Multiplied by [j(j+1)-l(l+1)-s(s+1)]/2l·s, CONLS = 2.000
  • Tensor potentials (TYPE=5,6,7): Second derivative forms, normalized to unity when E=1

Special Features:

  • If TYPE < 0: Add potential numerically to previous potential using abs(TYPE)
  • SHAPE ≥ 30: L/J-dependent potential with form factor
  • SHAPE = 40-42: Parity/L/J-dependent potentials
  • SHAPE 7-9: Read from external file (rewind with negative values)

Coulomb Potential

Optical Potential

Real Volume
Imaginary Volume
Spin-Orbit

Bound State Potential

Real Volume
Spin-Orbit

Generated Input File

Select parameters and click "Generate Input File" to create a FRESCO input file for capture reactions.