Recoil-ion trapping for precision mass measurements

Herlert, A.; Gorp, S. Van; Beck, D.; Blaum, Klaus; Breitenfeldt, M.; Cakirli, R. B.; George, Sebastian; Hager, U.; Herfurth, F.; Kellerbauer, A.; Lunney, D.; Savreux, R.; Schweikhard, L.; Yazidjian, C.

doi:10.1140/epja/i2012-12097-2

Cited by 14 publications

(12 citation statements)

References 51 publications

(47 reference statements)

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“…The Fe isotopes were not produced directly but were measured as decay products of the Mn isotopes in the Penning trap using the so-called in-trap decay method [39]. More technical details about the Fe isotope measurements will be given in an upcoming publication [40]. In the second experimental run 85 Rb + ions were used as a reference for the 64−66 Mn mass determinations.…”

Section: Resultsmentioning

confidence: 99%

Surveying theN=40island of inversion with new manganese masses

et al. 2012

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High-precision mass measurements of neutron-rich 57−66 Mn and 61−63 Fe isotopes are reported. The new mass surface shows no shell closure at N = 40. In contrast, there is an increase of the two-neutron separation energy at N = 38. This behavior is consistent with the onset of collectivity due to the occupation of intruder states from higher orbits, in analogy with the well known "island of inversion" around N = 20. Our results indicate that the neutron-rich Mn isotopes, starting from 63 Mn, are most likely within the new island of inversion. From the new mass surface, we evaluate the empirical proton-neutron interaction and the pairing gap, both playing a significant role in the structural changes in this region.

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Section: Resultsmentioning

confidence: 99%

Surveying theN=40island of inversion with new manganese masses

et al. 2012

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“…of the daughter nuclei [23] in case of a β − decay, with m e and m recoil the mass of the electron and the recoiling ion, respectively. In the case of the decay of 34 Mg to 34 Al, the Q value being 11.39 MeV, the maximum recoil energy is about 2.3 keV.…”

Section: Experimental Setup and In-trap Decay Principlementioning

confidence: 99%

“…If this β decay occurs in a gas-filled Penning trap, the decay products can be captured, cooled, and sent to another setup for the measurement. This in-trap decay technique was first implemented using ISOLTRAP [22,23], and allowed to measure the refractory daughter isotopes [61][62][63] Fe from the decays of [61][62][63] Mn.…”

Section: Introductionmentioning

confidence: 99%

Mass measurements of neutron-rich isotopes near N=20 by in-trap decay with the ISOLTRAP spectrometer

et al. 2019

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“…This opens the door to mass measurements of species which would otherwise not be accessible due to limitations in the production mechanism, ionization, or extraction. This was recently demonstrated at the ISOLTRAP facility [50,51] and is also planned for the TAMU-TRAP system [52] at Texas A & M University.…”

Section: Speed Of the Mass Measurementsmentioning

confidence: 99%

Precision atomic physics techniques for nuclear physics with radioactive beams

Blaum¹,

Dilling²,

2013

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Atomic physics techniques for the determination of ground-state properties of radioactive isotopes are very sensitive and provide accurate masses, binding energies, Q-values, charge radii, spins, and electromagnetic moments. Many fields in nuclear physics benefit from these highly accurate numbers. They give insight into details of the nuclear structure for a better understanding of the underlying effective interactions, provide important input for studies of fundamental symmetries in physics, and help to understand the nucleosynthesis processes that are responsible for the observed chemical abundances in the Universe. Penning-trap and and storage-ring mass spectrometry as well as laser spectroscopy of radioactive nuclei have now been used for a long time but significant progress has been achieved in these fields within the last decade. The basic principles of laser spectroscopic investigations, Penning-trap and storage-ring mass measurements of short-lived nuclei are summarized and selected physics results are discussed. † going to cryogenic temperatures, or enhancing the induced signal by using higher charge states and/or longer accumulation times. Ideal applications for this method are mass measurements of super-heavy element (SHE) isotopes for nuclear structure studies as they are performed at SHIPTRAP [25,26]. SHE are produced in minuscule quantities, and typically have half-lives of hundreds of milliseconds to a few seconds. A proof-ofprinciple experiment is planned at the TRIGA reactor facility TRIGA-TRAP at Mainz University [27] and applications for HITRAP with highly charged ions are foreseen [28]. Requirements for Mass Measurements of Radioactive IonsThe specific requirements for the mass measurements of radioactive ions stem from the parameters of the ions themselves. For example the required sensitivity (depending on the production yield) and measurement speed (depending on the half-life) as well as the envisaged application which dictates the required precision. In order to be meaningful, all measurements should deliver reliable data, hence precise and accurate. The physics requirements can be categorized with the corresponding relative precision as follows:• nuclear structure, δm/m ≈ 1 × 10 −7• nuclear astrophysics, δm/m ≈ 1 × 10 −7/−8 • test of fundamental symmetries, neutrino physics, δm/m ≈ 1 × 10 −8/−9

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Recoil-ion trapping for precision mass measurements

Cited by 14 publications

References 51 publications

Surveying theN=40island of inversion with new manganese masses

Surveying theN=40island of inversion with new manganese masses

Mass measurements of neutron-rich isotopes near N=20 by in-trap decay with the ISOLTRAP spectrometer

Precision atomic physics techniques for nuclear physics with radioactive beams

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