US Government As Represented by the Secretary of the Army

Brian R Strickland

George R Edlin

Thomas G Roberts

Leon H Riley

Robert W Jones

Michael J Lavan

Thomas H Shumpert

Calvin C Easterbrook

A reflected energy detecting device includes a transmitter for transmitting an electromagnetic signal and a receiver for receiving a reflected electromagnetic signal. An antenna may be operatively connected with the transmitter and the receiver for radiating the electromagnetic signal and capturing the reflected electromagnetic signal and the antenna may be movable. A main controller may be provided for controlling operation of the transmitter and the receiver and the movement of the antenna and the reflected energy detecting device may further include at least one platform. The at least one platform may support a remote reflector that is dimensioned and configured to redirect the transmitted electromagnetic signal in a desired direction and a platform controller that is configured to communicate with the main controller and to maintain alignment between the remote reflector and the antenna.

Radar beam steering with remote reflectors/refractors

A liquid immersed pumped solid state lasing system comprising a light source and a lasing element spaced from the light source. The light source and the lasing element are mounted in an insulated container. The top of the container is open for inputting a clear cryogenic cooling liquid into the container to totally immerse the light source and the lasing element in the liquid. Heat transfer occurs by conduction from the light source and the lasing element to the liquid thereby cooling the light source and the lasing element to cryogenic temperatures. The container has a window for the output of laser light. A plurality of electrical leads which are superconducting at cryogenic temperatures are attached to the light source. When the leads are connected to a power supply outside the container, the light source directs light on the lasing element so that the lasing element is excited and transmits a light output through the window.

Liquid immersed pumped solid state laser

A thin foil stripper and simple non-obstructing power meter for a space based neutral particle beam system consisting of a panel of thin foils supported by resistance wires and mounted on a wheel or disk in such a manner that the surface used for stripping the beam may be changed or replaced periodically. The power meter consists of four resistors arranged in the form of a bridge, a power source (battery), a detector (voltmeter), and a display unit (recorded, etc.). Two of the resistors consist of the wires which support the foils and are nearly identical. The other two resistors are used to balance the bridge. When one of the strippers is exposed to the neutral particle beam, the support wire is heated, the resistance changes, and the bridge becomes unbalanced. The magnitude of the voltage produced is proportional to the power in the beam. The power meter is non-obstructing.

Supported thin foil stripper and simple non-obstructing power meter for a space based neutral particle beam system

A negative ion source with an automatic control system wherein a low power igh frequency discharge is used to sustain a high power low voltage dc discharge in a chamber that magnetically confines the plasma produced. The low power high frequency discharge and the high power low voltage direct current discharge are two discharges along with the gas flow rate which are independently adjusted, automatically, so that the conditions for optimum production of vibationally excited hydrogen molecules consistent with the production of maximum H.sup.- output current is obtained and maintained. This chamber is separated by a magnetic filter field from a second chamber which maintains the low temperature plasma in the second chamber necessary for the optimum production of H.sup.- ions by the process of dissociative attachment, utilizing the vibrationally excited molecules produced by the first chamber.

HF sustained, DC discharge driven negative ion source with automatic

A negative ion source is disclosed wherein an electron beam produced in one chamber is used to sustain a discharge in another chamber whose conditions are independently adjusted for optimum production of vibrationally excited hydrogen molecules. By including a provision for an independently controlled source of low energy electrons in a region near the extraction aperture, the optimum conditions for creation of H.sup.- ions by dissociative attachment are produced. In this manner the current and brightness of a H.sup.- beam may be maximized.

Electron beam driven negative ion source

A method of locating an electrostatic discharge event in a predetermined ucture by sensing electromagnetically that an electrostatic discharge event has occurred and producing a trigger signal from the electromagnetic sensing to control a recording device for the starting of time, utilizing a plurality of acoustic detectors about the structure for sensing the acoustic of the electrostatic discharge event, determining the time elapsed between the starting of time by the electromagnetic sensing and the signals sensed by the acoustic detectors and utilizing the information gained from the times sensed and the predetermined locations of the sensors to determine the location of the electrostatic discharge event in the predetermined structure.

Method of detecting and locating an electrostatic discharge event

A beam intensity monitor for monitoring high energy particle beams by placing the monitor across the path of a particle beam to intercept a small portion of the particle beam as it passes therethrough. The monitor comprises primarily a four resistor bridge arrangement driven by a power source and utilizing a voltmeter as a detector for changes in bridge voltage. One of the four resistors functions as the sensor for the monitor. The sensor comprises an elongated wire resistance that is folded, coiled or otherwise shaped to encompass an area or region through which the neutral particle beam is directed to pass. The resistance wire is heated by passage of the particle beam therethrough, being impacted by approximately 0.1% of the beam, causing the bridge to become unbalanced. The magnitude of the voltage produced is proportional to the power in the beam. Simultaneously, phosphor beads attached to the elongated wire are also struck by the particles in the beam. These particles cause the phosphor to fluoresce and the light which is emitted from the phosphors is observed by a television camera, providing a measure of the spatial distribution of the particles within the beam.

Beam intensity monitor for a high energy particle beam system

A device for determining the direction of a neutral particle beam relative o a reference direction is provided. The technique of laser resonant fluorescence is used. Measurements are made near the doppler free angle and a direct view prism means is used for automatically compensating for small drifts in the laser frequency is used to insure that the most accurate alignment results are obtained even with laser frequency changes.

Compensated laser resonant fluorescence beam sensing device for neutral

A small field probe is calibrated by selectively varying the field intens and frequency and recording the data in arrays with each incremental step. The arrays are built by selectively varying one parameter while maintaining another constant. In this way coefficients of the equation for the calibration of the probe is arrived.

Automated calibration technique for non-field perturbing (electrically

A two dimensional portable double gap detected probe for measuring B fields n large test volumes which are remote from electrical power. The probe is small, portable, and constructed for minimum field perturbation. The output of the probe is read by an ordinary high impedance volt meter, which is easily portable, and does not require external power.

Two dimensional non-field perturbing, diode detected, double gapped,

This disclosure sets forth a device which produces uniform electromagnetic ields in the medium frequency (MF) and high frequency (HF) regimes over significantly large test volumes. The device converts electromagnetic energy available from a standard radio-frequency transmitter into a vertically polarized uniform electromagnetic field which propagates through a large open region and is dissipated/radiated at the termination. A broadband (MF and HF) electromagnetic radiation over a large test volume is provided.

Growing community of inventors

Huntsville, AL, United States of America

Brian R Strickland