X-Ray Laser: Dynamically assisted nuclear fusion

  • Just found an article on a german science news site about a new approach to achieve nuclear fusion by quantum tunneling induced by x-ray lasers.

    This sounds similar to Holmlids approach?

    The research was done at theoretical physics institute at Helmholtz-Zentrum Dresden-Rossendorf.

    The abstract:


    We consider deuterium-tritium fusion as a generic example for general fusion reactions. For initial kinetic energies in the keV regime, the reaction rate is exponentially suppressed due to the Coulomb barrier between the nuclei, which is overcome by tunneling. Here, we study whether the tunneling probability could be enhanced by an additional electromagnetic field, such as an x-ray free electron laser (XFEL). We find that the XFEL frequencies and field strengths required for this dynamical assistance mechanism should come within reach of present-day or near-future technology.


  • This sounds similar to Holmlids approach?

    Not much, the laser that Holmlid is using is much much less powerful than a XFEL. In Holmlid's case, first there is a phase transition from Rydberg Matter of hydrogen to a supposed ultra condensed form with atoms separated by only about 1 picometer. Tunneling to fusion already happens without a laser.

    Here they still use the brute force with crazy powerful lasers to overcome this repulsion. That said, I find this approach still better than thermonuclear fusion which IMHO is the worst approach to fusion.

  • >>> "not based on any currently available technology,"


    Even though nuclear physics is customarily

    associated with very high field strengths and energies (in the

    MeV to GeV range), we find that nuclear fusion could be

    assisted at much lower scales, which should come within

    reach of present-day or near-future XFEL facilities

    (or with electrons) ... [see appended snaps]

    Apart from the deformation of the potential

    barrier, the time dependence plays a crucial role for

    assisting tunneling through the Coulomb barrier, in close

    analogy to the dynamically assisted Sauter-Schwinger effect ...

    We found that the tunneling exponent is enhanced ...

    Note that dynamically assisted tunneling

    has already been observed experimentally in several other

    scenarios ...

    The proposed dynamical assistance mechanism should also

    work for other fusion reactions. An important example is

    deuterium-deuterium fusion ...

    In summary, our understanding of tunneling is still far from

    complete and offers surprises which motivate further studies ...

    After understanding the main mechanism better, the next

    step would be to study whether it could be observed experimentally

    and which scenario (e.g., beam-beam or beam-target

    fusion, thermal or inertial fusion) might be most suitable.

    These findings could then determine the potential for possible

    future technological applications.

  • I agree this is classic fusion, is a theoretical study for building a NIF sort of test reactor with higher chances of achieving COP over 1. That is the sad state of classic hot fusion. Even the 10 to 14% excess heat seen in the MFMP replications of Celani’s experiment is way better than anything Hot fusion research has ever achieved. Never loose sight of that.

    I certainly Hope to see LENR helping humans to blossom, and I'm here to help it happen.

  • And I can’t talk about classic hot fusion without mentioning, again, that even in this kind of research, anomalies have been found when using the z-pinch inertial confinement approach, where the thermal output energy was 4 times the kinetic energy imparted by the electric energy input used to vaporize stainless steel wires, and this created the highest man made produced temperature record for several years before the LHC begin to function.

    I certainly Hope to see LENR helping humans to blossom, and I'm here to help it happen.

  • A laser doesn’t need to assist with tunneling to improve fusion, it just needs to change the state of the target and/or projectile such that some of their electric fields are converted to magnetic fields. With less repulsive force the coulomb barrier is smaller, and fusion occurs at a lower temperature.

    The ability to create magnecules is the ability to create reactants with a lower coulomb barrier to fusion and hence colder fusion.