Beam cooler for low-energy radioactive ions

Nieminen, A.; Huikari, J.; Jokinen, A.; Äystö, J.; Campbell, P.; Cochrane, E C A

doi:10.1016/s0168-9002(00)00750-6

Cited by 260 publications

(113 citation statements)

References 17 publications

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“…The ions flow with helium out from the gas cell and into a sextupole ion guide [8], after which they are electrostatically accelerated to an energy of 30q keV. These energetic ions are then separated with a 55 • dipole magnet, which has a mass resolving power R (≡ M/∆M ) of about 500, and injected into a radiofrequency quadrupole (RFQ) structure for ion-beam cooling and bunching [9]. Finally, each bunch is released to the JYFLTRAP Penningtrap setup where the ions' masses are measured with the time-of-flight ion-cyclotron-resonance (TOF-ICR) technique [10].…”

Section: Experimental Methodsmentioning

confidence: 99%

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

et al. 2011
Phys. Rev. C
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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: Experimental Methodsmentioning

confidence: 99%

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

et al. 2011
Phys. Rev. C
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“…due to the versatility and universality of these devices, which provide beams of low emittance and the option of a pulsed release of ions. Examples of facilities which have such an apparatus in operation include ISOLTRAP at ISOLDE [5], the IGISOL facility in Jyväskylä [6] and LEBIT at MSU [7].…”

Section: Introductionmentioning

confidence: 99%

An ion cooler-buncher for high-sensitivity collinear laser spectroscopy at ISOLDE

et al. 2009

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Abstract. A gas-filled segmented linear Paul trap has been installed at the focal plane of the high-resolution separator (HRS) at CERN-ISOLDE. As well as providing beams with a reduced transverse emittance, this device is also able to accumulate the ions and release the sample in bunches with a well-defined time structure. This has recently permitted collinear laser spectroscopy with stable and radioactive bunched beams to be demonstrated at ISOLDE. Surface-ionized 39,44,46 K and 85 Rb beams were accelerated to 30 keV, mass separated and injected into the trap for subsequent extraction and delivery to the laser setup. The ions were neutralized in a charge exchange cell and excited with a co-propagating laser. The small ion beam emittance allowed focussing in the ion-laser overlap region, which is essential to achieve the best experimental sensitivity. Fluorescent photons were detected by a photomultiplier tube as a frequency scan was taken. A gate (typically 7-12 μs wide) was set on the photomultiplier signal to accept the fluorescent photons within the time window defined by the bunch. Thus, using accumulation times of 100 ms, the dominant contribution to background due to continuous laser scattering could be reduced by a factor of up to 4 × 10 4 .

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“…After being mass-separated the continuous beam of A/q = 42 ions was bunched with a gas-filled radiofrequency (RFQ) cooler-buncher [8], and then transferred to the JYFLTRAP Penning-trap mass spectrometer, which consists of two cylindrical Penning traps [4,5]. In our measurement, the ion bunches from the RFQ were initially transferred to the first of the two Penning traps.…”

Section: Experimental Methodsmentioning

confidence: 99%

QEC value of the superallowed β emitter Sc42

et al. 2017

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The QEC value of the superallowed β + -emitter 42 Sc has been measured with the JYFLTRAP Penning-trap mass spectrometer at the University of Jyväskylä to be 6426.350(53) keV. This result is at least a factor of four more precise than all previous measurements, which were also inconsistent with one another. As a byproduct we determine the excitation energy of the 7 + isomeric state in 42 Sc to be 616.762(46) keV, which deviates by 8σ from the previous measurement.

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Beam cooler for low-energy radioactive ions

Cited by 260 publications

References 17 publications

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

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

An ion cooler-buncher for high-sensitivity collinear laser spectroscopy at ISOLDE

QEC value of the superallowed β emitter Sc42

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Beam cooler for low-energy radioactive ions

Cited by 260 publications

References 17 publications

QECvalues of the superallowedβemittersCEronen1, Gorelov2, Hakala3 et al. 2011Phys. Rev. CSelf Cite28380View full textAdd to dashboardCite

QECvalues of the superallowedβemittersCEronen1, Gorelov2, Hakala3 et al. 2011Phys. Rev. CSelf Cite28380View full textAdd to dashboardCite

An ion cooler-buncher for high-sensitivity collinear laser spectroscopy at ISOLDE

QEC value of the superallowed β emitter Sc42

Contact Info

Product

Resources

About

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

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