Universal main magnetic focus ion source: A new tool for laboratory research of astrophysics and Tokamak microplasma

Abstract

A novel room-temperature ion source for the production of atomic ions in electron beam within wide ranges of electron energy and current density is developed. The device can operate both as conventional Electron Beam Ion Source/Trap (EBIS/T) and novel Main Magnetic Focus Ion Source. The ion source is suitable for generation of the low-, medium-and high-density microplasma in steady state, which can be employed for investigation of a wide range of physical problems in ordinary university laboratory, in particular, for microplasma simulations relevant to astrophysics and ITER reactor. For the electron beam characterized by the incident energy E e = 10 keV, the current density j e ∼ 20 kA/cm 2 and the number density n e ∼ 2 × 10 13 cm −3 were achieved experimentally. For E e ∼ 60 keV, the value of electron number density n e ∼ 10 14 cm −3 is feasible. The efficiency of the novel ion source for laboratory astrophysics significantly exceeds that of other existing warm and superconducting EBITs. A problem of the K-shell electron ionization of heavy and superheavy elements is also discussed. * URL: http://mamfis.net/ovsyannikov.html †

Considerations towards the possibility of the observation of parity nonconservation in highly charged ions in storage rings

“…Employing equation (41) the degree of the nuclear polarization in the final He-like HCI with zero total angular momentum can be written as…”

“…The velocity v rel (which enters the expression for R) will diminish due to this adjustment, but RR s grows up faster than v rel diminishes. Second, it was reported about an EBITtype device [41] that allows to create the electron source with number density up to 10 e 14 r = cm −3 . This is achieved by using magnetic compression.…”

“…This is achieved by using magnetic compression. According to [41] this device has a small size and therefore can be placed inside the ring. With 10 e 12 r > cm −3 the time t cap will become smaller.…”