Phase-dependent cross sections of deuteron-triton fusion in dichromatic intense fields with high-frequency limit

We investigate the influence of strong dichromatic laser fields (i.e., $$1\omega -2\omega $$ and -3\omega ) with high-frequency limit on cross sections deuteron-triton (DT) fusion in Kramers-Henneberger (KH) frame. focus transitions phase-dependent effects depending a dimensionless quantity $$n_{\mathrm {d}}$$ , which equals ratio quiver oscillation amplitude to geometrical touching radius deuteron triton as defined our previous research. Theoretical calculations show that angle-dependent well Coulomb barrier penetrabilities can be enhanced intense fields, corresponding angle-averaged increase significantly compared field-free case. Then, we two beams different intensities. Moreover, find there are twice shifts peak values for . The reason first shift is sub-barrier fusion, while second due accumulation over-barrier these mechanisms analyzed detail this paper.