Enhancement of soft X-ray lasing action with thin blade radiators

Title: Enhancement of soft X-ray lasing action with thin blade radiators

Full Record
Other Related Research

Abstract

An enhancement of approximately 100 of stimulated emission over spontaneous emission of the CVI 182 Angstrom line was obtained in a recombining magnetically confined plasma column. The plasma was formed by focusing a CO.sub.2 laser beam on a carbon disc. A magnetic solenoid produced a strong magnetic field which confined the plasma to the shape of a column. A single thin carbon blade extended parallel to the plasma column and served to make the column axially more uniform and also acted as a heat sink. Axial and transverse measurements of the soft X-ray lasing action were made from locations off-set from the central axis of the plasma column. Multiple carbon blades located at equal intervals around the plasma column were also found to produce acceptable results. According to another embodiment 10 a thin coating of aluminum or magnesium was placed on the carbon disc and blade. The Z of the coating should preferably be at least 5 greater than the Z of the target. Measurements of the soft X-rays generated at 182 Angstroms showed a significant increase in intensity enhancement.

Inventors:

Suckewer, Szymon ^[1]; Skinner, Charles H. ^[2]; Voorhees, David R. ^[3]

(Princeton Junction, NJ)
(Kingston, NJ)
(Hopewell, NJ)

Issue Date:: 1988-01-01

OSTI Identifier:: 866720

Patent Number(s):: 4771430

Assignee:: Princeton University (Princeton, NJ) OSTI

DOE Contract Number:: KC-05-01

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: enhancement; soft; x-ray; lasing; action; blade; radiators; approximately; 100; stimulated; emission; spontaneous; cvi; 182; angstrom; line; obtained; recombining; magnetically; confined; plasma; column; formed; focusing; laser; beam; carbon; disc; magnetic; solenoid; produced; strong; field; shape; single; extended; parallel; served; axially; uniform; acted; heat; sink; axial; transverse; measurements; locations; off-set; central; axis; multiple; blades; located; equal; intervals; found; produce; acceptable; results; according; embodiment; 10; coating; aluminum; magnesium; placed; z; preferably; target; x-rays; generated; angstroms; significant; increase; intensity; lasing action; significant increase; confined plasma; plasma column; central axis; heat sink; magnetic field; laser beam; soft x-ray; stimulated emission; magnetically confined; strong magnetic; spontaneous emission; soft x-rays; equal intervals; x-rays generated; /372/

Citation Formats


                    Suckewer, Szymon, Skinner, Charles H., and Voorhees, David R. Enhancement of soft X-ray lasing action with thin blade radiators.  United States: N. p., 1988. 
        Web.

Copy to clipboard


                    Suckewer, Szymon, Skinner, Charles H., & Voorhees, David R. Enhancement of soft X-ray lasing action with thin blade radiators.  United States.

Copy to clipboard


                    Suckewer, Szymon, Skinner, Charles H., and Voorhees, David R. Fri .  
        "Enhancement of soft X-ray lasing action with thin blade radiators".  United States.  https://www.osti.gov/servlets/purl/866720.

Copy to clipboard


                    
@article{osti_866720,

  title        = {Enhancement of soft X-ray lasing action with thin blade radiators},

  author       = {Suckewer, Szymon and Skinner, Charles H. and Voorhees, David R.},

  abstractNote = {An enhancement of approximately 100 of stimulated emission over spontaneous emission of the CVI 182 Angstrom line was obtained in a recombining magnetically confined plasma column. The plasma was formed by focusing a CO.sub.2 laser beam on a carbon disc. A magnetic solenoid produced a strong magnetic field which confined the plasma to the shape of a column. A single thin carbon blade extended parallel to the plasma column and served to make the column axially more uniform and also acted as a heat sink. Axial and transverse measurements of the soft X-ray lasing action were made from locations off-set from the central axis of the plasma column. Multiple carbon blades located at equal intervals around the plasma column were also found to produce acceptable results. According to another embodiment 10 a thin coating of aluminum or magnesium was placed on the carbon disc and blade. The Z of the coating should preferably be at least 5 greater than the Z of the target. Measurements of the soft X-rays generated at 182 Angstroms showed a significant increase in intensity enhancement.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1988},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in DOE Patents and OSTI.GOV collections:

Enhancement of soft X-ray lasing action with thin blade radiators

Patent Suckewer, S.; Voorhees, D.R.; Skinner, C.H.

A soft X-ray laser apparatus is described comprising: a target having a Z equal to or greater than 5; laser beam producing means for producing a laser beam to impinge upon the target and create a plasma; magnetic field means for confining the plasma substantially in the shape of a column; and radiator means for contacting the plasma and for reducing the temperature of free-electrons in the plasma by heat conduction and radiation, the radiator means comprising at least one blade having an edge for contacting the plasma column, wherein the plasma column has a central axis A/sub rho/ andmore »« less
Apparatus and method for generating soft x-ray lasing action in a confined plasma column through the use of a picosecond laser

Patent Suckewer, S.

An apparatus for generating soft X-ray lasing action is described comprising: a target; first laser means for producing a first laser beam for interacting with the target and for generating a plasma having ions therein; magnetic field means for confining the plasma and shaping it substantially into the form of a column; second laser means for producing second laser beam having a pulse duration less than 2 picosencds and a power in excess of 10/sup 15/ w/cm/sup 2/ for interacting with the plasma column to provide strong selective excitation of the ions to create population inversion and gain for softmore » X-ray lasing action.« less
Soft X-ray laser using pumping of 3P and 4P levels of He-like and H-like ions

Patent Hagelstein, Peter L. (Livermore, CA)

X-ray laser method and apparatus for producing coherent radiation at, for example, energies of at least 40 eV, using Be-like Cr, N-like Ni, He-like Na, B-like Cr, Be-like Mn or similar multiply ionized species to pump appropriate high energy transitions in He-like or H-like N, O, F, C or rare gases, with associated laser transition gains of 4-50 cm.sup.-1.
Full Text Available
Soft x-ray reduction camera for submicron lithography

Patent Hawryluk, Andrew M. (2708 Rembrandt Pl., Modesto, CA 95356); Seppala, Lynn G. (7911 Mines Rd., Livermore, CA 94550)

Soft x-ray projection lithography can be performed using x-ray optical components and spherical imaging lenses (mirrors), which form an x-ray reduction camera. The x-ray reduction is capable of projecting a 5x demagnified image of a mask onto a resist coated wafer using 4.5 nm radiation. The diffraction limited resolution of this design is about 135 nm with a depth of field of about 2.8 microns and a field of view of 0.2 cm.sup.2. X-ray reflecting masks (patterned x-ray multilayer mirrors) which are fabricated on thick substrates and can be made relatively distortion free are used, with a laser produced plasmamore »« less
Full Text Available
Reflection soft X-ray microscope and method

Patent Suckewer, Szymon (Princeton, NJ); Skinner, Charles H. (Lawrenceville, NJ); Rosser, Roy (Princeton, NJ)

A reflection soft X-ray microscope is provided by generating soft X-ray beams, condensing the X-ray beams to strike a surface of an object at a predetermined angle, and focusing the X-ray beams reflected from the surface onto a detector, for recording an image of the surface or near surface features of the object under observation.
Full Text Available

Similar Records