FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W655165114> ?p ?o ?g. }

• W655165114 abstract "A modified Penning-Malmberg trap that could store a small cloud of antiprotons for a relatively long time (weeks) has been developed. This trap is intended for use in research on the feasibility of contemplated future matter/antimatter-annihilation systems as propulsion sources for spacecraft on long missions. This trap is also of interest in its own right as a means of storing and manipulating antiprotons for terrestrial scientific experimentation. The use of Penning-Malmberg traps to store antiprotons is not new. What is new here is the modified trap design, which utilizes state-of-the-art radiofrequency (RF) techniques, including ones that, heretofore, have been used in radio-communication applications but not in iontrap applications. A basic Penning-Malmberg trap includes an evacuated round tube that contains or is surrounded by three or more collinear tube electrodes. A steady axial magnetic field that reaches a maximum at the geometric center of the tube is applied by an external source, and DC bias voltages that give rise to an electrostatic potential that reaches a minimum at the center are applied to the electrodes. The combination of electric and magnetic fields confines the charged particles (ions or electrons) for which it was designed to a prolate spheroidal central region. However, geometric misalignments and the diffusive cooling process prevent the steady fields of a basic Penning- Malmberg trap from confining the particles indefinitely. In the modified Penning-Malmberg trap, the loss of antiprotons is reduced or eliminated by use of a rotating-wall RF stabilization scheme that also heats the antiproton cloud to minimize loss by matter/antimatter annihilation. The scheme involves the superposition of a quadrupole electric field that rotates about the cylindrical axis at a suitably chosen radio frequency. The modified Penning-Malmberg trap (see Figure 1) includes several collinear sets of electrodes inside a tubular vacuum chamber. Each set comprises either a single metal tube or else a tube that is segmented into four electrodes that subtend equal angles about the cylindrical axis. The output of an RF signal generator is fed through a 90 hybrid coupler and then through two baluns to generate four replicas of the signal at relative phase shifts of 0 , 90 , 180 , and 270 (see Figure 2). These signal replicas are fed through 6-dB directional couplers, then via coaxial cables to the vacuum chamber. The signal is then routed to a phase cancellation network, which filters out the drive signal with the difference representing the plasma interaction. Inside the vacuum chamber, twisted-pair wires feed the signals from the coaxial cables to the four electrodes of each segmented electrode tube." @default.
• W655165114 created "2016-06-24" @default.
• W655165114 creator A5016963628 @default.
• W655165114 creator A5032513133 @default.
• W655165114 creator A5050858221 @default.
• W655165114 date "2005-03-01" @default.
• W655165114 modified "2023-09-27" @default.
• W655165114 title "Modified Penning-Malmberg Trap for Storing Antiprotons" @default.
• W655165114 hasPublicationYear "2005" @default.
• W655165114 type Work @default.
• W655165114 sameAs 655165114 @default.
• W655165114 citedByCount "0" @default.
• W655165114 crossrefType "journal-article" @default.
• W655165114 hasAuthorship W655165114A5016963628 @default.
• W655165114 hasAuthorship W655165114A5032513133 @default.
• W655165114 hasAuthorship W655165114A5050858221 @default.
• W655165114 hasConcept C110916831 @default.
• W655165114 hasConcept C121099081 @default.
• W655165114 hasConcept C121332964 @default.
• W655165114 hasConcept C143873397 @default.
• W655165114 hasConcept C147120987 @default.
• W655165114 hasConcept C153294291 @default.
• W655165114 hasConcept C184779094 @default.
• W655165114 hasConcept C185544564 @default.
• W655165114 hasConcept C201941533 @default.
• W655165114 hasConcept C202100949 @default.
• W655165114 hasConcept C203918408 @default.
• W655165114 hasConcept C54516573 @default.
• W655165114 hasConceptScore W655165114C110916831 @default.
• W655165114 hasConceptScore W655165114C121099081 @default.
• W655165114 hasConceptScore W655165114C121332964 @default.
• W655165114 hasConceptScore W655165114C143873397 @default.
• W655165114 hasConceptScore W655165114C147120987 @default.
• W655165114 hasConceptScore W655165114C153294291 @default.
• W655165114 hasConceptScore W655165114C184779094 @default.
• W655165114 hasConceptScore W655165114C185544564 @default.
• W655165114 hasConceptScore W655165114C201941533 @default.
• W655165114 hasConceptScore W655165114C202100949 @default.
• W655165114 hasConceptScore W655165114C203918408 @default.
• W655165114 hasConceptScore W655165114C54516573 @default.
• W655165114 hasLocation W6551651141 @default.
• W655165114 hasOpenAccess W655165114 @default.
• W655165114 hasPrimaryLocation W6551651141 @default.
• W655165114 hasRelatedWork W2021340046 @default.
• W655165114 hasRelatedWork W1496562064 @default.
• W655165114 hasRelatedWork W1504674421 @default.
• W655165114 hasRelatedWork W1544037442 @default.
• W655165114 hasRelatedWork W2124209698 @default.
• W655165114 hasRelatedWork W2737257770 @default.
• W655165114 hasRelatedWork W27534752 @default.
• W655165114 hasRelatedWork W2813647356 @default.
• W655165114 hasRelatedWork W2814399805 @default.
• W655165114 hasRelatedWork W2818285283 @default.
• W655165114 hasRelatedWork W2825968464 @default.
• W655165114 hasRelatedWork W2839212040 @default.
• W655165114 hasRelatedWork W2843613273 @default.
• W655165114 hasRelatedWork W2864416594 @default.
• W655165114 hasRelatedWork W2879041218 @default.
• W655165114 hasRelatedWork W2879439071 @default.
• W655165114 hasRelatedWork W2880805404 @default.
• W655165114 hasRelatedWork W2881542489 @default.
• W655165114 hasRelatedWork W2928500865 @default.
• W655165114 hasRelatedWork W3142701837 @default.
• W655165114 isParatext "false" @default.
• W655165114 isRetracted "false" @default.
• W655165114 magId "655165114" @default.
• W655165114 workType "article" @default.