Status of the project TRAPSENSOR
- PDF / 5,603,875 Bytes
- 15 Pages / 439.642 x 666.49 pts Page_size
- 37 Downloads / 227 Views
Status of the project TRAPSENSOR J. M. Cornejo · P. Escobedo · D. Rodr´ıguez
© Springer International Publishing Switzerland 2014
Abstract Penning traps are used to perform very precise mass measurements on exotic and stable nuclei covering a variety of topics. In order to reach the highest accuracy, only one ion must be stored and measured in the trap. The mass is determined from the oscillation frequencies, by detecting the current the stored ion induces on the trap electrodes. This is a well-known technique demonstrated for ions with low or medium mass-to-charge ratios. Another technique recently proposed, and referred to as Quantum Sensor, aims at extending the applicability of single-ion Penning-trap measurements through the full atomic mass scale. The technique substitutes the electronic detection by the detection of fluorescence photons from a laser-cooled ion stored in a second Penning trap, thereafter this ion interacts with the ion of interest. The new device is under completion at the University of Granada (Spain) within the project TRAPSENSOR. This paper will present the status of this project. Keywords Penning traps · Laser cooling · Fluorescence detection · Induced-image current detection
1 Introduction High-precision mass measurements on exotic and stable nuclei by means of Penning traps have become a very active field of research in the realm of nuclear and particle physics
Proceedings of the 9th International Workshop on Application of Lasers and Storage Devices in Atomic Nuclei Research “Recent Achievements and Future Prospects” (LASER 2013) held in Poznan, Poland, 13–16 May, 2013 We acknowledge support from the European Research Council (contract no 278648-TRAPSENSOR) and from the Spanish Ministry of Economy and Competitiveness through the projects FPA2010-14803, FPA2012-32076 and UNGR10-1E-501. P.E. acknowledges support from the Spanish Centre for Particles Astroparticles and Nuclear Physics. J. M. Cornejo · P. Escobedo · D. Rodr´ıguez () Departamento de F´ısica At´omica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain e-mail: [email protected]
J. M. Cornejo et al.
[1–3]. The relative mass uncertainty (δm/m) requested ranges from 10−7 for nuclear structure studies, to better than 10−11 if the atomic masses of β-decaying nuclei have to be used in combination with β-decay experiments to determine the (anti)neutrino mass. Currently there are seven Penning-trap setups running at Radioactive Ion Beam (RIB) facilities worldwide, yielding the atomic masses from very light and short-lived isotopes [4], to very heavy elements produced with very low cross sections [5, 6]. In addition to nuclear structure, many atomic masses of exotic nuclei measured at RIBs with Penning traps have been used as input data for astrophysics (e.g. [7]) and fundamental interaction studies (e.g. [8]). The outcomes have motivated the construction of new Penning traps at future RIB facilities, like MATS [9, 10], at the future Facility for Antiprotons and Ion Research (FAIR) in Darmstadt (Germany) [1
Data Loading...
