# DWBA and Monte Carlo Simulation

### Reaction:

Beam Energy |  | MeV/u
Beam |  | Jπ |  |  | Ex: |  | MeV
Target |
Light recoil |
Number of events |

### Detector:

HELIOS
SOLARIS
ISS
B-field |  | T (minus sign = field point to upstream)
Array Pos. |  | mm (negative for upstream)
Recoil Pos. |  | mm (negative for upstream)

### DWBA and Ex List:

For 2-nucleon transfer, Orbital take the form NL=X, where N is number of node, X is momentum number. n and L are related by Σi (2ni+li) = 2N + X + 2n + l, where ni and li are the principle number and orbital angular momentum of the each transfered nucleon, and n and l are the internal quanta of the 2-nucleon. e.g. (t,p) reaction to 0f orbtial, the left-hand side would be ni = 0 and li = 3 and the sum is 3+3 = 6 = 2N + X + 2n+l. Assume n = l = 0, we have 6 = 2N+L. Thus, 3L=0, 2L=2,1L=4, 0L=6.

TODO: guess the orbital
Positive parity Negative parity Unknown parity
Isotope: Max Ex: MeV

Ex [MeV] | Jπ | Orbital

Cal. DWBA

Incoming Channel |  |
Outgoing Channel |  |

Only DWBA and Don't Sim. Angle range (for only DWBA)
Min [deg]: |  | Max [deg]: |

### Plot config:

E vs Z | Ex (cal.) | ThetaCM
ThetaCM vs Z | Recoil X vs Y | Recoil-R vs ThetaCM
Recoil R vs Z | Time diff vs Z | Array X vs Y

Array Hit
Loop = 1
ThetaCM > 10 deg

## Advanced control

Download Sample files: | Reaction File
| DetectorGeo (SOLARIS) File
| DetectorGeo (HELIOS) File
| Ex File
| DWBA File
| Plot Config File

Reaction File |
DetectorGeo File |
Ex File |
DWBA File ^ |
*.in File ^ |
Plot Config File # |
^ can be alone # can be omitted |

- File name can be customized.
- For kinematic simulation, only the reactionConfig.txt, detectorGeo.txt, and Ex.txt are needed.
- For DWBA calculation, only the DWBA file is needed.
- If reactionConfig.txt, detectorGeo.txt, and DWBA file are presented, will do DWBA and use the result for simulation.
- When the DWBA file is presented, the kinematic simulation will use the DWBA result and also the excitation energy. i.e. the user provide Ex.txt will not be used.
- User can use a customs in File for DWBA calculation. Once the in File exist, it ignores the DWBA file.
- To change DWBA angular range, download the in file, edit it. But becareful, DWBA for kinematic simulation must be 0 -180 deg.

The source code for calculation can be found in Here