Abstract:
Streak camera whereof the pulse converter for converting a photon pulse for detecting into an electron stream comprises a gaseous medium. A streak camera for a photon pulse in the far-infrared region is provided with a laser source to bring particles in the medium into a Rydberg state, in a streak camera for an X-ray pulse the medium contains particles for bringing into an Auger state, and additional deflection plates are provided for separating a primary electron stream from a secondary electron stream.
Abstract:
PROBLEM TO BE SOLVED: To provide a device for detecting collision of energy particles, having a support frame and a multi-tube detector pack.SOLUTION: Each pack includes multiple detector tubes. Each tube contains at least one sensitive material. Each tube is elongate along a respective axis. The tubes have the respective axes within a plane, extending in parallel with each other. Each pack includes fitting tabs located at each axial end. The tabs provide support for the tubes within the pack. At least one of the tabs has at least one fastening part and at least one adjusting part. Each pack includes at least one operable fastening member which extends from the respective fastening portion to the frame. The operation of the fastening member allows the pack to be fastened to the support frame. Each pack includes at least one operable adjusting member extending from the respective adjusting part to the frame. The operation of the adjusting member allows the orientation of the pack to be changed.
Abstract:
PROBLEM TO BE SOLVED: To provide a wavelength detector having improved detection accuracy of a wavelength of ultraviolet laser light.SOLUTION: The wavelength detector comprises: a diffusing element which diffuses a laser beam; a condensing optical system provided downstream of the diffusing element; a component provided downstream of the condensing optical system and equipped with an aperture; a discharge tube provided downstream of the component and including cylindrical anode and cathode, which is so constituted that an electrical characteristic between the anode and cathode is varied by an opto-galvanic effect when a laser beam of a predetermined first wavelength passes through a through hole of the cathode in a state in which a DC voltage is applied to the anode; and a high-voltage DC power supply which is so constituted as to apply a DC voltage to the anode. The discharge tube is so disposed that the laser beam which passes through the aperture passes through the through hole of the cathode without directly irradiating the cathode of the discharge tube.
Abstract:
The sensor for detecting flame or smoke consists of an air-cavity(22) formed by etching on silicon substrate(22), an insulation layer(23) formed on the substrate, an opto-electrode formed on a certain place of the insulation layer, a glass substrate(28) with a bottom layer having a protective film(27) on the opto-electrode, an anode electrode formed on the bottom of the glass layer, and an epoxy electrode lead(30) connecting to the anode electrode and formed on the upper layer of the glass substrate. The glass substrate includes a transparency characteristic of the UV ray. The upper layer of the glass substrate is adhered face-to-face between the air cavity.
Abstract:
A detector system for performing at least one of transmitting and receiving electromagnetic radiation at a low-terahertz frequency. The detection of electromagnetic radiation at low-terahertz frequencies can be useful in the detection of various chemicals. Preferably a detector includes a microresonant structure that is caused to resonate by electromagnetic radiation at a low-terahertz frequency. The resonance is detected by detecting an altered path of a charged particle beam.
Abstract:
A microdischarge photodetector has a photocathode, an insulator and an anode. A cavity of limited size is disposed in the insulator and filled with gas. A voltage applied between the photocathode and the anode produces a plasma. Light incident on the photocathode having photon energies larger than about the work function produces photoelectrons are ejected from the photocathode and accelerated by the plasma electric field. The incident light is detected by detecting an increase in the plasma current or light emission from the plasma. The cavity may be flat or tapered and is designed to optimize detector performance.