Nuclear and Atomic Physics

1909 Submissions

[4] viXra:1909.0402 [pdf] submitted on 2019-09-20 04:58:28

Kinetic Plasma Instabilities

Authors: George Rajna
Comments: 82 Pages.

Plasmas are susceptible to kinetic instabilities when the velocity distribution of its constituent plasma electrons, ions or both becomes nonthermal. [43] Researchers at MIT's Plasma Science and Fusion Center (PSFC) have now demonstrated how microwaves can be used to overcome barriers to steady-state tokamak operation. [42] Plasma particle accelerators more powerful than existing machines could help probe some of the outstanding mysteries of our universe, as well as make leaps forward in cancer treatment and security scanning—all in a package that's around a thousandth of the size of current accelerators. [41]
Category: Nuclear and Atomic Physics

[3] viXra:1909.0275 [pdf] submitted on 2019-09-12 07:16:00

Nuclear Clock Transition

Authors: George Rajna
Comments: 39 Pages.

Now, a research team led by physicist Peter Thirolf at Ludwig-Maximilians-Universitaet (LMU) in Munich with institutional collaborators has taken an important step toward such a clock. [29] Physicists at the TU Darmstadt and their collaboration partners have performed laser spectroscopy on cadmium isotopes to confirm an improved model of the atomic nucleus. [28] Protons in neutron-rich nuclei have a higher average energy than previously thought, according to a new analysis of electron scattering data that was first collected in 2004. [27] Physics textbooks might have to be updated now that an international research team has found evidence of an unexpected transition in the structure of atomic nuclei. [26] The group led by Fabrizio Carbone at EPFL and international colleagues have used ultrafast transmission electron microscopy to take attosecond energy-momentum resolved snapshots (1 attosecond = 10-18 or quintillionths of a second) of a free-electron wave function. [25] Now, physicists are working toward getting their first CT scans of the inner workings of the nucleus. [24] The process of the sticking together of quarks, called hadronisation, is still poorly understood. [23] In experimental campaigns using the OMEGA EP laser at the Laboratory for Laser Energetics (LLE) at the University of Rochester, Lawrence Livermore National Laboratory (LLNL), University of California San Diego (UCSD) and Massachusetts Institute of Technology (MIT) researchers took radiographs of the shock front, similar to the X-ray radiology in hospitals with protons instead of X-rays. [22] Researchers generate proton beams using a combination of nanoparticles and laser light. [21] Devices based on light, rather than electrons, could revolutionize the speed and security of our future computers. However, one of the major challenges in today's physics is the design of photonic devices, able to transport and switch light through circuits in a stable way. [20] Researchers characterize the rotational jiggling of an optically levitated nanoparticle, showing how this motion could be cooled to its quantum ground state. [19] Researchers have created quantum states of light whose noise level has been "squeezed" to a record low. [18]
Category: Nuclear and Atomic Physics

[2] viXra:1909.0252 [pdf] submitted on 2019-09-12 04:25:15

Microworld_57. Unsolved Problems of Physics_ 17 Xxvii. Hydrogen Superfluidity

Authors: N.N.Leonov
Comments: 21 Pages. English and russian texts

Internet reports that the Harvard University physicists derived "metal" hydrogen having superconducting properties. Below it is shown that they, in fact, experimentally discovered the existence of superfluid hydrogen rather than superconducting one.
Category: Nuclear and Atomic Physics

[1] viXra:1909.0011 [pdf] submitted on 2019-09-02 05:18:02

Yield Estimation Formula of Plutonium 239 Nuclear Fission

Authors: Deep Jyoti Dutta
Comments: 1 Page.

The necessity of this note is to propose a theoretical formula to calculate the energy release in fissile plutonium 239 radioisotope or radionuclide in a nuclear fission reaction. This equation can approximately predict the yield of the fission energy of pu-239. The derivation may be kept classified.
Category: Nuclear and Atomic Physics