Abstract: A compound refractive lens for neutrons is provided having a plurality of individual unit Fresnel lenses comprising a total of N in number. The unit lenses are aligned substantially along an axis, the i-th lens having a displacement ti orthogonal to the axis, with the axis located such that
∑
i
=
1
N
⁢
⁢
t
i
=
0.
Each of the unit lenses comprises a lens material having a refractive index decrement &dgr;<1 at a wavelength &lgr;<200 Angstroms.
Type:
Grant
Filed:
September 27, 2001
Date of Patent:
July 20, 2004
Assignee:
Adelphi Technology Inc.
Inventors:
Melvin A. Piestrup, Richard H. Pantell, Hector R. Beguiristain
Abstract: A compound refractive lens for focusing, collecting, collimating and imaging with x-rays comprising N unit lenses numbered i=1 through N unit lenses substantially aligned along an axis such that i-th lens having a displacement ti orthogonal to said axis, with said axis located such that the sum of the lens displacements ti equals zero, and wherein each of said unit lenses comprises a lens material of lithium, carbon, or polyimide. A method for molding and housing the unit lenses is provided such that the unit lens have high surface and optical quality, and do not chemically deteriorate due to absorption of water or oxidation.
Type:
Grant
Filed:
June 25, 2002
Date of Patent:
January 6, 2004
Assignee:
Adelphi Technology, Inc.
Inventors:
Hector R. Beguiristain, Jay T. Cremer, Melvin A. Piestrup
Abstract: The present invention includes a magnetic storage ring into which electrons or other charged particles can be injected from a point external to the ring and still subscribe a path, after injection, contained within the magnetic storage ring. The magnetic storage ring consists of purely static (permanent) magnetic fields. The particles pass one or more times through a solid target that causes the high energy charged particles to emit radiation and damps the momentum of the particles, so that they cannot escape the magnetic field, allowing them to be captured therein.
Abstract: In accordance with the present invention, a compound refractive lens for focusing, collecting and collimating x-rays comprising N individual unit lenses numbered i=1 through N, with each unit lens substantially aligned along an axis such that the i-th lens has a displacement ti orthogonal to said axis, with said axis located such that the sum of the displacements ti equals zero, and wherein each of said unit lenses comprises a lens material having a refractive index decrement less than 1 at a wavelength less than 100 Angstroms.
Type:
Grant
Filed:
May 7, 1999
Date of Patent:
July 31, 2001
Assignee:
Adelphi Technology, Inc.
Inventors:
Melvin A. Piestrup, Richard H. Pantell, Jay T. Cremer, Hector R. Beguiristain
Abstract: An apparatus is provided for generating high-intensity x-rays for medical, industrial, and scientific purposes. A thin radiator is placed inside a betatron as an internal target. The radiators are thin enough and the energy of the electron beam is high enough such that the electrons pass through the radiator and return a plurality of times. The average current through the thin radiator is increased by the average number of times the electrons pass through the radiator. Thus, both the average x-ray power and the wall-plug efficiency of the apparatus are increased. In addition, for the betatron the required electron-beam energy is much smaller than that require for recirculation in storage ring and microwave-power cavity acceleration booster rings. This is because the path length around betatron toroid is much shorter; thus, the recycling process is less affected by scattering and energy loss.
Type:
Grant
Filed:
September 4, 1998
Date of Patent:
March 13, 2001
Assignee:
Adelphi Technology, Inc.
Inventors:
Melvin A. Piestrup, Louis W. Lombardo, Valery V. Kaplin
Abstract: A tunable generator or amplifier of intense, collimated, monochromatic electromagnetic radiation includes primarily of a relativistic electron beam, a periodic medium, a periodic magnet or electromagnetic field, a vacuum housing, and, in the primary embodiment, a ring resonator. An accelerator provides a high current, relativistic electron beam which interacts with an electromagnetic wave in a periodic magnetic field and a periodic medium to achieve periodic phase synchronizism between the phase velocity of the electromagnetic wave and the velocity of the said electron beam. The said periodic phase synchronization results in the bunching of the electron beam and the amplification of the electromagnetic wave. In the primary embodiment the growing wave is returned back to the interaction region via Bragg reflectors. The wave continues to grow on each pass through the interaction region formed by the periodic medium and magnetic field.
Abstract: A high-intensity, inexpensive X-ray source for X-ray lithography for the production of integrated circuits. Foil stacks are bombarded with a high-energy electron beam of 25 to 250 MeV to produce a flux of soft X-rays of 500 eV to 3 keV. Methods of increasing the total X-ray power and making the cross section of the X-ray beam uniform are described. Methods of obtaining the desired X-ray-beam field size, optimum frequency spectrum and elminating the neutron flux are all described. A method of obtaining a plurality of station operation is also described which makes the process more efficient and economical. The satisfying of these issues makes transition radiation an exellent moderate-priced X-ray source for lithography.
Type:
Grant
Filed:
August 21, 1990
Date of Patent:
December 31, 1991
Assignee:
Adelphi Technology Inc.
Inventors:
Melvin A. Piestrup, David G. Boyers, Cary Pincus
Abstract: An intense, relatively inexpensive X-ray source (as compared to a synchrotron emitter) for technological, scientific, and spectroscopic purposes. A conical radiation pattern produced by a single foil or stack of foils is focused by optics to increase the intensity of the radiation at a distance from the conical radiator.
Type:
Grant
Filed:
July 12, 1989
Date of Patent:
August 21, 1990
Assignee:
Adelphi Technology Inc.
Inventors:
Melvin A. Piestrup, David G. Boyers, Cary I. Pincus, Pierre Maccagno