Direct observation of a single proton in a Penning trap Towards a direct measurement of the proton g-factor
-
- Deutsch, Englisch ausgewählt
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Beschreibung
Produktdetails
Einband
Taschenbuch
Erscheinungsdatum
01.10.2009
Verlag
Südwestdeutscher Verlag für HochschulschriftenSeitenzahl
124
Maße (L/B/H)
22/15/0,9 cm
Gewicht
203 g
Auflage
1. Auflage
Sprache
Deutsch, Englisch
ISBN
978-3-8381-1109-4
Experiments are performed on a single proton stored in
a Penning trap aiming at the determination of the g-factor.
The eigenmotion of an isolated, free proton could be detected
electronically via coupling to a resonance circuit, which
represents a non-destructive measurement. The free cyclotron
frequency emerging from the measured eigenfre-quencies is one
of two frequencies required for a direct determination of the
magnetic moment. Design, developing, and commissioning of the
experimental setup have been accomplished leading to a
measuring accuracy of 10-7. The technical challenges for the
determination of the second (Larmor) frequency arising from
the smallness of the magnetic moment were mastered. Since the
spin state required for this measurement is an internal
degree of freedom, it can only be accessed through a coupling
of the magnetic moment to the eigenmotion. A novel, hybrid
Penning trap is presented, which im-prints the spin
information onto the eigenmotion, thus, realizing a quantum
jump spectrometer. Therewith, the frequency shift of the two
spin states resulting from the magnetic coupling reaches for
the first time an electronically detectable range.
a Penning trap aiming at the determination of the g-factor.
The eigenmotion of an isolated, free proton could be detected
electronically via coupling to a resonance circuit, which
represents a non-destructive measurement. The free cyclotron
frequency emerging from the measured eigenfre-quencies is one
of two frequencies required for a direct determination of the
magnetic moment. Design, developing, and commissioning of the
experimental setup have been accomplished leading to a
measuring accuracy of 10-7. The technical challenges for the
determination of the second (Larmor) frequency arising from
the smallness of the magnetic moment were mastered. Since the
spin state required for this measurement is an internal
degree of freedom, it can only be accessed through a coupling
of the magnetic moment to the eigenmotion. A novel, hybrid
Penning trap is presented, which im-prints the spin
information onto the eigenmotion, thus, realizing a quantum
jump spectrometer. Therewith, the frequency shift of the two
spin states resulting from the magnetic coupling reaches for
the first time an electronically detectable range.
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