title: Extreme-ultraviolet spectral purity and magnetic ion debris mitigation by use of low-density tin targets.
abstract: We investigate the extreme-ultraviolet (EUV) emission from targets that contain tin as an impurity and the advantages of using these targets for ion debris mitigation by use of a magnetic field. The EUV spectral features were characterized by a transmission grating spectrograph. The in-band EUV emission energy was measured with a calorimeter of absolute calibration. The ion flux coming from the plume was measured with a Faraday cup. Our studies indicate that 0.5% Sn density is necessary to obtain a conversion efficiency very close to that of full-density Sn. The use of Sn-doped low-Z targets provides a narrower unresolved transition array and facilitates better control of energetic ions in the presence of a moderate magnetic field of 0.64 T.
authors.affiliation: Center for Energy Research, University of California, San Diego, La Jolla 92093-0438, USA. sharilal@ucsd.edu
authors.forename: S S
authors.initials: SS
authors.lastname: Harilal
authors.forename: M S
authors.initials: MS
authors.lastname: Tillack
authors.forename: Y
authors.initials: Y
authors.lastname: Tao
authors.forename: B
authors.initials: B
authors.lastname: O'Shay
authors.forename: R
authors.initials: R
authors.lastname: Paguio
authors.forename: A
authors.initials: A
authors.lastname: Nikroo