Demonstration of soft x-ray amplification in nickel-like ions

Journal Article · Mon Nov 09 00:00:00 EST 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.2157· OSTI ID:6009273

MacGowan, B J; Maxon, S; Hagelstein, P L; Keane, C J; London, R A; Matthews, D L; Rosen, M D; Scofield, J H; Whelan, D A

We report the first observation of amplification of spontaneous emission at soft x-ray wavelengths by ions in the nickel-like sequence. The ions are created by high-intensity laser irradiation of a thin foil. Gains of order 1 cm/sup -1/ are observed on J = 0-1, 4d-4p transitions in Eu/sup 35+/ at 65.83 and 71.00 A. There is some evidence for amplification on the analogous lines at 50.26 and 56.09 A in Yb/sup 42+/. The pumping mechanism is believed to be electron collisional excitation from the ground state. The scheme should be readily scalable to produce amplification in W/sup 46+/ at 43.15 A.

• Research Organization: Lawrence Livermore National Laboratory, Livermore, California 94550
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6009273
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 59:19
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
EUROPIUM IONS
STIMULATED EMISSION
SOFT X RADIATION
AMPLIFICATION
X-RAY LASERS
D STATES
FOILS
LASER RADIATION
NICKEL IONS
P STATES
PHYSICAL RADIATION EFFECTS
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
EMISSION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
IONIZING RADIATIONS
IONS
LASERS
RADIATION EFFECTS
RADIATIONS
X RADIATION
420300* - Engineering- Lasers- (-1989)