The high precision mass spectrometer ISOLTRAP at ISOLDE/CERN – a versatile tool box for nuclear physics studies.

Monday 19 November 2018, 11.00AM

Speaker(s): Frank Wienholtz from the ISOLTRAP collaboration.

The multi-reflection time-of-flight mass separator/spectrometer (MR-ToF MS).

[1-3] installed at the ISOLTRAP experiment [4] at ISOLDE at CERN has proven to be a valuable asset, allowing fast identification of the incoming ion beams [5] and selection and transfer of only a certain species to either the Penning-trap section [6], or to other experimental components [7]. The time-of-flight information can also be used to determine the masses of the beam constituents with sufficient precision for many physics’ topics, such as nuclear structure [8-12] and astrophysics [6, 13]. In addition to mass spectrometry, the MR-ToF can also provide purified samples for decay spectroscopy [6] or, in combination with the Resonant Ionization Laser Ion Source (RILIS) of ISOLDE, for measurements of nuclear moments and charge radii with background suppression [14-16]. The fast-identification capabilities also make the MR-ToF a very attractive tool for target and ion source optimization and ion yield determination [17].

The ISOLTRAP setup will be discussed in detail and recent results will be presented.

[1] R.N. Wolf et al., Int. J. Mass Spectrom. 349-350, 123 (2013).
[2] R.N. Wolf et al., Nucl. Instrum. Meth. A 686, 82 (2012).
[3] F. Wienholtz et al., Int. J. Mass Spectrom. 285-293, 421 (2017).
[4] G. Mukherjee et al., Eur. Phys. J. A 35, 1 (2008).
[5] S. Kreim et al., Nucl. Instrum. Meth. B 317, 492 (2013).
[6] R.N. Wolf et al., Phys. Rev. Lett. 110, 041101 (2013).
[7] N.A. Althubiti et al., Phys. Rev. C 96, 044325 (2017).
[8] F. Wienholtz et al., Nature 498 346 (2013).
[9] A. Welker et al., Phys. Rev. Lett. 119, 192502 (2017).
[10] V. Manea et al., Phys. Rev. C 8, 054322 (2013).
[11] M. Rosenbusch M et al., Phys. Rev. Lett. 114 202501 (2105).
[12] M. Mougeot et al., Phys. Rev. Lett. 120, 232501 (2018).
[13] D. Atanasov et al., Phys. Rev. Lett. 115, 232501 (2015).
[14] B.A. Marsh et al., Nucl. Instrum. Meth. B 317, 550-556 (2013).
[15] J. Cubis et al., Phys. Rev. C 97, 054327 (2018).
[16] B. A. Marsh et al., Nature physics, (2018) 10.1038/s41567-018-0292-8
[17] A. Gottberg et al., Nucl. Instrum. Meth. B 336, 143-148 (2014).

Location: P/T/111