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  • ELECTRONIC COMPONENTS AND CIRCUITS  (7)
  • Atomic and molecular structure and dynamics  (3)
  • 1
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    Excited atomic energy levels in protactinium by resonance ionization spectroscopy (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-08-11
    Description: Author(s): Pascal Naubereit, Tina Gottwald, Dominik Studer, and Klaus Wendt We present high-resolution data of the single-excitation spectrum of protactinium, reaching slightly beyond the first-ionization threshold. Within this work, more than 1500 energy levels are recorded in different excitation energy ranges below 50 000 cm − 1 . Our experimental results show that the tabula... [Phys. Rev. A 98, 022505] Published Fri Aug 10, 2018
    Keywords: Atomic and molecular structure and dynamics ; high-precision measurements
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Intrinsic quantum chaos and spectral fluctuations within the protactinium atom (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-08-11
    Description: Author(s): Pascal Naubereit, Dominik Studer, Anna V. Viatkina, Andreas Buchleitner, Barbara Dietz, Victor V. Flambaum, and Klaus Wendt Recently, spectroscopic investigations of the protactinium atom applying resonant laser ionization spectroscopy revealed high-resolution data of the single-excitation spectrum of protactinium, reaching slightly beyond the first ionization potential [P. Naubereit et al. , preceding paper, Phys. Rev. ... [Phys. Rev. A 98, 022506] Published Fri Aug 10, 2018
    Keywords: Atomic and molecular structure and dynamics ; high-precision measurements
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 3
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    Laser spectroscopy of the 1001-nm ground-state transition in dysprosium (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-10-11
    Description: Author(s): D. Studer, L. Maske, P. Windpassinger, and K. Wendt We present a direct excitation of the presumably ultranarrow 1001 − nm ground-state transition in atomic dysprosium. By using resonance ionization spectroscopy with pulsed Ti:sapphire lasers at a hot cavity laser ion source, we were able to measure the isotopic shifts in the 1001 − nm line between all s... [Phys. Rev. A 98, 042504] Published Wed Oct 10, 2018
    Keywords: Atomic and molecular structure and dynamics ; high-precision measurements
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 4
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    Brushless dc motor has high efficiency, long life (1966)
    In:  CASI
    Details
    Publication Date: 2019-05-29
    Description: Brushless dc motor operates as a commutator in a vacuum environment with high efficiency and long life. Because of its excellent response time, it can be used in the servomechanism field.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: GSC-181
    Format: application/pdf
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  • 5
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    Brushless dc motor uses electron beam switching tube as commutator (1965)
    In:  CASI
    Details
    Publication Date: 2019-05-23
    Description: Electron beam switching tube eliminates physical contact between rotor and stator in brushless dc motor. The tube and associated circuitry control the output of a dc source to sequentially energize the motor stator windings.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: GSC-345
    Format: application/pdf
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  • 6
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    Capacitive connectors for digital-data lines (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Proposed connector consisting of twin metal films separated by thin layers of insulating material transmits digital pulses capacitively. There is no direct contact between metal films; therefore, there is no ohmic contact drop and no wear when connections are changed. Since metal films are sealed in insulating material, there is no corrosion from exposure to atmosphere.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: GSC-12238 , NASA Tech Briefs (ISSN 0145-319X); 2; 2; P. 3
    Format: text
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  • 7
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    An electric motor with magnetic bearings: A concept (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Because same magnetic flux is used to control rotor as to drive it, size, weight, and power required are minimized. Constant total current keeps motor torque invarient, and absence of mechanical bearings eliminates wear and reduces frictional power loss.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: XGS-07805
    Format: application/pdf
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  • 8
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    Rotary Transformer Seals Power In (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Rotary transformer originally developed for spacecraft transfers electrical power from stationary primary winding to rotating secondary without sliding contacts and very little leakage of electromagnetic radiation. Transformer has two stationary primary windings connected in parallel. Secondary, mounted on a shaft that extends out of housing, rotates between two windings of primary. Shaft of secondary is composed of electrically conducting inner and outer parts separated by an insulator. Electrical contact is made from secondary winding, through shaft, to external leads.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: GSC-12595 , NASA Tech Briefs (ISSN 0145-319X); 6; 1; P. 9
    Format: text
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  • 9
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    Helical recorder (1969)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Tape recorder, using metallic tape, has a minimum of moving parts and no belts. It permits long-term bulk storage in extreme environments, and has less weight and bulk than present recording equipment.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: GSC-10614
    Format: application/pdf
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  • 10
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    Field-Sequential Color Converter (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Electronic conversion circuit enables display of signals from field-sequential color-television camera on color video camera. Designed for incorporation into color-television monitor on Space Shuttle, circuit weighs less, takes up less space, and consumes less power than previous conversion equipment. Incorporates state-of-art memory devices, also used in terrestrial stationary or portable closed-circuit television systems.
    Keywords: ELECTRONIC COMPONENTS AND CIRCUITS
    Type: MSC-21346 , NASA Tech Briefs (ISSN 0145-319X); 13; 7; P. 24
    Format: text
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