Recent Upgrades of the SHIPTRAP Setup: On the Finish Line Towards Direct Mass Spectroscopy of Superheavy Elements

Giacoppo, F.; Blaum, Klaus; Block, M.; Chhetri, P.; Düllmann, Ch. E.; Droese, C.; Eliseev, Sergey; Filianin, Pavel; Götz, Stefan; Gusev, Yu.; Herfurth, F.; Heßberger, F. P.; Kaleja, O.; Khuyagbaatar, J.; Laatiaoui, M.; Lautenschläger, F.; Lorenz, Christian D.; Marx, G.; Ramirez, E. Minaya; Mistry, A.; Novikov, Yu. N.; Plaß, W. R.; Raeder, S.; Rodriguez, D. Rodriguez; Rudolph, Dirk; Sarmiento, Luis; Scheidenberger, C.; Schweikhard, L.; Thirolf, P.; Yakushev, A.

doi:10.5506/aphyspolb.48.423

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…In addition, the overall efficiency is increased utilizing the cryogenic gas stopping cell [11]. It was implemented at the SHIPTRAP experiment, requiring the rearrangement of the whole beamline from a perpendicular [1] to a close-to-zero-degree position with respect to SHIP [12]. An overview of the current setup is given in Fig.…”

Section: Introductionmentioning

confidence: 99%

The performance of the cryogenic buffer-gas stopping cell of SHIPTRAP

Kaleja

Anđelić

Blaum

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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Direct high-precision mass spectrometry of the heaviest elements with SHIPTRAP, at GSI in Darmstadt, Germany, requires high efficiency to deal with the low production rates of such exotic nuclides. A secondgeneration gas stopping cell, operating at cryogenic temperatures, was developed and recently integrated into the relocated system to boost the overall efficiency. Offline measurements using 223 Ra and 225 Ac recoil-ion sources placed inside the gas volume were performed to characterize the gas stopping cell with respect to purity and extraction efficiency. In addition, a first online test using the fusion-evaporation residue 254 No was performed, resulting in a combined stopping and extraction efficiency of 33(5)%. An extraction time of 55(44) ms was achieved. The overall efficiency of SHIPTRAP for fusion-evaporation reaction products was increased by an order of magnitude to 6(1)%. This will pave the way for direct mass spectrometry of heavier and more exotic nuclei, eventually in the region of superheavy elements with proton numbers Z 104.

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Section: Introductionmentioning

confidence: 99%

The performance of the cryogenic buffer-gas stopping cell of SHIPTRAP

Kaleja

Anđelić

Blaum

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

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“…The absolute frequencies for these transitions in the absence of magnetic field are listed in Tab. (5).…”

Section: Fluorescence Measurements: Towards Doppler Cooling In 7 Teslamentioning

confidence: 99%

“…Besides the on-going developments of a variant of the induced-image current technique for SHEs [5,18], a novel method for mass spectrometry was proposed based on the use of a single laser-cooled 40 Ca + ion as detector [19], following a scheme based on two traps described earlier [20]. In the first ever attempt to experimentally realize this concept, the sensitivity of a single 40 Ca + ion laser-cooled to the Doppler limit (T 1 limit mK) has been characterized by studying its axial motion in an open-ring Paul trap [21,22].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the PENTATRAP experiment at the Max Planck Institute for Nuclear Physics in Heidelberg has been built to perform ultra-high accuracy mass measurements on highly-charged heavy ions [3]. There is also a Penning-traps beamline coupled to the TRIGA reactor in Mainz [4], and a new Penning-trap system at GSI-Darmstadt, which is part of an upgrade of the SHIPTRAP facility for precision measurements on superheavy elements (SHEs) [5].…”

Section: Introductionmentioning

confidence: 99%

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The TRAPSENSOR facility: an open-ring 7 tesla Penning trap for laser-based precision experiments

et al. 2019

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A Penning-trap facility for high-precision mass spectrometry based on a novel detection method has been built. This method consists in measuring motional frequencies of singly-charged ions trapped in strong magnetic fields through the fluorescence photons from laser-cooled 40 Ca + ions, to overcome limitations faced in electronic single-ion detection techniques. The key element of this facility is an open-ring Penning trap coupled upstream to a preparation Penning trap similar to those used at Radioactive Ion Beam facilities. Here we present a full characterization of the trap and demonstrate motional frequency measurements of trapped ions stored by applying external radiofrequency fields in resonance with the ions' eigenmotions, in combination with time-of-flight identification. The infrastructure developed to observe the fluorescence photons from 40 Ca + , comprising the 12 laser beams and the optical system to register the image in a high-sensitive CCD sensor, has been proved by taking images of the trapped and cooled 40 Ca + ions. This demonstrates the functionality of the proposed laser-based mass-spectrometry technique, providing a unique platform for precision experiments with implications in different fields of physics.

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Recent progress in experiments on the heaviest nuclides at SHIP

et al. 2022

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Understanding the atomic and nuclear properties of very heavy and superheavy nuclides is one of the main objectives in experiments at the recoil separator SHIP at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt, Germany. This article summarizes recent experiments performed on isotopes of the elements with Z = 102–105. The radionuclides of interest were produced in heavy-ion fusion-evaporation reactions with lead and bismuth targets and separated from the primary beam by the velocity filter SHIP. The studies by $$\alpha $$ α –$$\gamma $$ γ spectroscopy experiments, direct mass measurements and laser spectroscopy employed the SHIP decay-spectroscopy setup, the new COMPASS detector, the mass spectrometer SHIPTRAP, and the laser spectroscopy setup RADRIS. This article briefly introduces the experimental approaches and discusses selected results providing a more comprehensive picture of the nuclear structure around the deformed neutron shell closure at $$N=152$$ N = 152 . Future perspectives to extend such experiments towards other regions in the heaviest nuclei will also be addressed.

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Recent Upgrades of the SHIPTRAP Setup: On the Finish Line Towards Direct Mass Spectroscopy of Superheavy Elements

Abstract: Recent upgrades of the SHIPTRAP setupOn the finish line towards direct mass spectroscopy of superheavy elements

Cited by 6 publications

References 19 publications

The performance of the cryogenic buffer-gas stopping cell of SHIPTRAP

The performance of the cryogenic buffer-gas stopping cell of SHIPTRAP

The TRAPSENSOR facility: an open-ring 7 tesla Penning trap for laser-based precision experiments

Recent progress in experiments on the heaviest nuclides at SHIP

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