The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results

Details The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results

2007-01-22

arxiv.org/abs/physics/0701236v1

Int. J. Mass. Spectrom. 264 (2007) 110-121

Physics

Atomic Physics

12 pages, 14 figures, 2 tables

Scientific paper

10.1016/j.ijms.2007.04.003

The highest precision in direct mass measurements is obtained with Penning trap mass spectrometry. Most experiments use the interconversion of the magnetron and cyclotron motional modes of the stored ion due to excitation by external radiofrequency-quadrupole fields. In this work a new excitation scheme, Ramsey's method of time-separated oscillatory fields, has been successfully tested. It has been shown to reduce significantly the uncertainty in the determination of the cyclotron frequency and thus of the ion mass of interest. The theoretical description of the ion motion excited with Ramsey's method in a Penning trap and subsequently the calculation of the resonance line shapes for different excitation times, pulse structures, and detunings of the quadrupole field has been carried out in a quantum mechanical framework and is discussed in detail in the preceding article in this journal by M. Kretzschmar. Here, the new excitation technique has been applied with the ISOLTRAP mass spectrometer at ISOLDE/CERN for mass measurements on stable as well as short-lived nuclides. The experimental resonances are in agreement with the theoretical predictions and a precision gain close to a factor of four was achieved compared to the use of the conventional excitation technique.

Affiliated with

Also associated with

No associations

Rating

The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Ramsey method in high-precision mass spectrometry with Penning traps: Experimental results will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-517089