title: Physics research and technology developments of electron string ion sources.
abstract: The most recent experimental information on electron string phenomenon, such as two step transition to electron string state, stability of e-strings in condition of electron energy recuperation, are described. The new technology developments of electron string ion sources (ESIS) include pulse injection of gaseous species in e-string and its efficient conversion to ion beams, slow ion extraction, ion-ion cooling of heavy ions with CH(4) coolant, and a progress in the construction of the new Joint Institute for Nuclear Research ESIS with 6 T solenoid are briefly considered.
authors.affiliation: Veksler and Baldin Laboratory of High Energy Physics, Joint Institute for Nuclear Research, Dubna 141980, Russia.
authors.forename: D E
authors.initials: DE
authors.lastname: Donets
authors.forename: E E
authors.initials: EE
authors.lastname: Donets
authors.forename: T
authors.initials: T
authors.lastname: Honma
authors.forename: K
authors.initials: K
authors.lastname: Noda
authors.forename: A Yu
authors.initials: AY
authors.lastname: Ramzdorf
authors.forename: V V
authors.initials: VV
authors.lastname: Salnikov
authors.forename: V B
authors.initials: VB
authors.lastname: Shutov
authors.forename: E D
authors.initials: ED
authors.lastname: Donets