Octupolar excitation of ion motion in a Penning trap—A study performed at LEBIT

Ringle, R.; Bollen, G.; Schury, P.; Schwarz, S.; Sun, T.

doi:10.1016/j.ijms.2006.10.009

Cited by 58 publications

(67 citation statements)

References 23 publications

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“…However, the ions of interest typically comprise less than 1% of the mass-separated beam from IGISOL, so to have, for example, a few 34 Ar ions in a bunch, we have to collect 2-3 orders-of-magnitude more ions -mostly 34 Cl and 34 S -in the RFQ buncher. Once a large enough bunch has been collected, it is sent to the first of the two Penning traps that constitute the JYFLTRAP setup.…”

Section: A Ion Preparationmentioning

confidence: 99%

“…As shown in Fig. 1 for the mass-34 measurements, the purification process in the first Penning trap is sufficent to make clean bunches of 34 Ar, but it is not enough to separate 34 Cl from 34 Cl m . The same problem occurs in the case of mass-38 as well.…”

Section: A Ion Preparationmentioning

confidence: 99%

“…Since the energy content of the trap-modified cyclotron motion is of the order of several eV and the energy of the magnetron motion is only a few µeV, the resonantly excited ions can have as much as a factor of two shorter time-of-flight to the MCP detector than non-excited ions. Figure 4 shows a sample TOF-ICR curve for 34 Ar, in which the measured ion time-of-flight is plotted as a function of the quadrupoleexcitation frequency over a 30 Hz range. In this case, the ion-motion excitation was accomplished by use of the Ramsey method of time-separated oscillatory fields.…”

Section: B Tof-icr Measurementmentioning

confidence: 99%

“…5 shows the individual cyclotron frequencies obtained for the 34 Ar-34 Cl pair, together with the deviations of the frequency ratios from the average value. It can be seen that, although the magnetic field fluctuates, the cyclotronfrequency ratios were consistent over an eight-hour period on one day, and a five-hour period a day later.…”

Section: Control Of Systematic Errorsmentioning

confidence: 99%

“…We report here Q EC -value results for 10 C, 34 Ar, 38 Ca and 46 V with fractional uncertainties in the range (1-5)×10 −5 , substantially better than any previous measurements for these transitions, and low enough that, with improvements in their half-lives and branching ratios, the uncertainties in these F t values could in principle be reduced to ∼1 × 10 −4 , a factor of five to ten below the uncertainties of the best-known cases today.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

QECvalues of the superallowedβemittersC
Eronen
¹
,
Gorelov
²
,
Hakala
³

et al. 2011
Phys. Rev. C
28
3
8
0
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The QEC values of the superallowed β + -emitters 10 C, 34 Ar, 38 Ca and 46 V have been measured with the JYFLTRAP Penning-trap mass spectrometer to be 3648.12(8), 6061.83(8), 6612.12(7) and 7052.44(10) keV, respectively. All four values are substantially improved in precision over previous results. Of the well-known superallowed emitters, only 14 O has yet to have had its QEC value measured with a Penning trap.

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Section: A Ion Preparationmentioning

confidence: 99%

Section: A Ion Preparationmentioning

confidence: 99%

Section: B Tof-icr Measurementmentioning

confidence: 99%

Section: Control Of Systematic Errorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

QECvalues of the superallowedβemittersC
Eronen
¹
,
Gorelov
²
,
Hakala
³

et al. 2011
Phys. Rev. C
28
3
8
0
View full text Add to dashboard Cite

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The interconversion of the radial motional modes of an ion in a Penning trap mass spectrometer by 4n‐polar external radio frequency fields (n = 1,2,3,4)

Kretzschmar

2013

Annalen der Physik

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In Penning trap mass spectrometry ion masses are determined by measuring the free cyclotron frequency ν c = qB/(2π m) via the resonant conversion of the magnetron into the cyclotron motional mode, induced by the interaction with an external radio-frequency field. With octupolar rf-fields of frequency ν rf ≈ 2ν c the mass resolution has been improved by more than an order of magnitude as compared to conventional quadrupolar fields of frequency ν rf ≈ ν c and with the same pulse duration. This result raises the question what one might expect from using 12-polar rffields with frequency ν rf ≈ 3ν c or even 16-polar rf-fields with frequency ν rf ≈ 4ν c .In this paper the theoretical model for the interconversion of the radial modes by quadrupolar and octupolar rffields is generalized to general 4n-polar fields. As in the earlier work the complex amplitudes of the cyclotron and magnetron oscillators are used as dynamical variables and the Hamiltonian equations of motion are reformulated in terms of Bloch vector components. The resulting non-linear differential equations can be solved numerically.Results are presented on excitation functions (conversion at the exact resonance frequency) and on conversion line shapes (dependence of conversion on the detuning parameter). The most important observation is the decrease of the resonance width by a factor of 2 × 10 3 as one passes from quadrupolar (n = 1) to 12-polar (n = 3) and 16-polar (n = 4) excitation.

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Current literature in mass spectrometry

2007

J. Mass Spectrom.

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of mass spectrometry. Each bibliography is divided into 11 sections: 1 Reviews; 2 Instrumental Techniques & Methods; 3 Gas Phase Ion Chemistry; 4 Biology/Biochemistry: Amino Acids, Peptides & Proteins; Carbohydrates; Lipids; Nucleic Acids; 5 Pharmacology/Toxicology; 6 Natural Products; 7 Analysis of Organic Compounds; 8 Analysis of Inorganics/Organometallics; 9 Surface Analysis; 10 Environmental Analysis; 11 Elemental Analysis. Within each section, articles are listed in alphabetical order with respect to author (4 Weeks journals ‐ Search completed at 29th. June 2007)

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Octupolar excitation of ion motion in a Penning trap—A study performed at LEBIT

Cited by 58 publications

References 23 publications

QECvalues of the superallowedβemittersC
Eronen
¹
,
Gorelov
²
,
Hakala
³

et al. 2011
Phys. Rev. C
28
3
8
0
View full text Add to dashboard Cite

QECvalues of the superallowedβemittersC
Eronen
¹
,
Gorelov
²
,
Hakala
³

et al. 2011
Phys. Rev. C
28
3
8
0
View full text Add to dashboard Cite

The interconversion of the radial motional modes of an ion in a Penning trap mass spectrometer by 4n‐polar external radio frequency fields (n = 1,2,3,4)

Current literature in mass spectrometry

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Octupolar excitation of ion motion in a Penning trap—A study performed at LEBIT

Cited by 58 publications

References 23 publications

QECvalues of the superallowedβemittersCEronen1, Gorelov2, Hakala3 et al. 2011Phys. Rev. C28380View full textAdd to dashboardCite

QECvalues of the superallowedβemittersCEronen1, Gorelov2, Hakala3 et al. 2011Phys. Rev. C28380View full textAdd to dashboardCite

The interconversion of the radial motional modes of an ion in a Penning trap mass spectrometer by 4n‐polar external radio frequency fields (n = 1,2,3,4)

Current literature in mass spectrometry

Contact Info

Product

Resources

About

QECvalues of the superallowedβemittersC
Eronen
¹
,
Gorelov
²
,
Hakala
³

et al. 2011
Phys. Rev. C
28
3
8
0
View full text Add to dashboard Cite

QECvalues of the superallowedβemittersC
Eronen
¹
,
Gorelov
²
,
Hakala
³

et al. 2011
Phys. Rev. C
28
3
8
0
View full text Add to dashboard Cite