Fast Laser Cooling of Long Lived Ion Beams

TL;DR

This paper discusses a novel approach to rapidly cool long-lived ion beams in storage rings using broadband lasers with selective interaction, analyzing the non-uniform cooling rates through a generalized Robinson theorem.

Contribution

It introduces a new laser cooling scheme for long-lived ion beams that accounts for non-exponential cooling dynamics using a generalized Robinson theorem.

Findings

Different regions of phase space cool at different rates.

The scheme effectively reduces ion beam temperature rapidly.

Theoretical analysis explains non-uniform cooling behavior.

Abstract

Some peculiarities of fast laser cooling of long-lived ion beams in storage rings are discussed. Selective interaction of ions and broadband laser beam with sharp frequency and geometric edges is used while laser and ion beams are partially overlapped. The rates of change of the ion beam density in different regions of the phase space and at different moments of time in this scheme of cooling differ. That is why the generalized Robinson theorem valid for the infinitesimal phase space regions of non exponential cooling in turn is used to interpret the results.