H

Properties of Antiprotons and Antihydrogen, and the Study of Exotic Atoms

“…In a subsequent experiment on antiprotonic X-rays of P, Cl, K, of Sn, I, Pr, and of W, the same group 41 explored more fully the effect of the strong interaction on the deepest lying bound states, and in addition to determining the reduction of some transitions, also observed the effect of the strong interaction via the line width and energy shift in one of the target nuclei, sulfur. These X-ray studies -as in the case of pionic atoms -also allowed probing isotopic effects, this time with antiprotons: the first measurements (still at 26 allowing to separate thep−n andp−p scattering lengths, although some assumptions about the neutron distributions in the nuclear tail needed to be made.…”

Single pass electron beam cooling of gold ions between EBIS LINAC and booster is theoretically possible!

“…Other channels of recombination like three body collisional recombination or dielectronic recombination have extremely low probability 28 . Cross section 29,30 for the latter, for example, is usually of the order of 10 -19 cm 2 or less.…”

Emittance Reduction between EBIS LINAC and Booster by Electron Beam Cooling; Is Single Pass Cooling Possible?

“…For electrons to match ion velocity, their energy U must be about 1 KeV. At these energies, ion and electron velocities are about 2x10 7 meter/second, hence β = 0.0667 and γ = 1.0022.…”

“…Other channels of recombination like three body collisional recombination or dielectronic recombination have extremely low probability 6 . Cross section 29,30 for the latter, for example, is usually of the order of 10 -19 cm 2 or less.…”