Direct mass measurement of the four-neutron halo nuclide He8

V. L. Ryjkov; M. Brodeur; T. Brunner; M. Smith; R. Ringle; A. Lapierre; F. Ames; P. Bricault; M. Dombsky; P. Delheij; D. Lunney; M. R. Pearson; J. Dilling

doi:10.1103/PhysRevLett.101.012501

Direct mass measurement of the four-neutron halo nuclide He8

V. L. Ryjkov, M. Brodeur, T. Brunner, M. Smith, R. Ringle, A. Lapierre, F. Ames, P. Bricault, M. Dombsky, P. Delheij, D. Lunney, M. R. Pearson, J. Dilling

Neutron Sciences Directorate

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58 Scopus citations

Abstract

A high-precision Penning trap mass measurement of the exotic He8 nuclide (T1/2=119ms) has been carried out resulting in a reduction of the uncertainty of the halo binding energy by over an order of magnitude. The new mass, determined with a relative uncertainty of 9.2×10-8 (δm=690eV) is 13 keV less bound than the previously accepted value. The mass measurement is of great relevance for the recent charge-radius measurement of He8. The He8 mass is the first result from the newly-commissioned Penning trap: TITAN (TRIUMF's Ion Trap for Atomic and Nuclear science) at the ISAC (Isotope Separator and Accelerator) radioactive beam facility at TRIUMF.

Original language	English
Article number	012501
Journal	Physical Review Letters
Volume	101
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.101.012501
State	Published - Jul 1 2008

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abstract = "A high-precision Penning trap mass measurement of the exotic He8 nuclide (T1/2=119ms) has been carried out resulting in a reduction of the uncertainty of the halo binding energy by over an order of magnitude. The new mass, determined with a relative uncertainty of 9.2×10-8 (δm=690eV) is 13 keV less bound than the previously accepted value. The mass measurement is of great relevance for the recent charge-radius measurement of He8. The He8 mass is the first result from the newly-commissioned Penning trap: TITAN (TRIUMF's Ion Trap for Atomic and Nuclear science) at the ISAC (Isotope Separator and Accelerator) radioactive beam facility at TRIUMF.",

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AU - Ryjkov, V. L.

AU - Brodeur, M.

AU - Brunner, T.

AU - Smith, M.

AU - Ringle, R.

AU - Lapierre, A.

AU - Ames, F.

AU - Bricault, P.

AU - Dombsky, M.

AU - Delheij, P.

AU - Lunney, D.

AU - Pearson, M. R.

AU - Dilling, J.

PY - 2008/7/1

Y1 - 2008/7/1

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AB - A high-precision Penning trap mass measurement of the exotic He8 nuclide (T1/2=119ms) has been carried out resulting in a reduction of the uncertainty of the halo binding energy by over an order of magnitude. The new mass, determined with a relative uncertainty of 9.2×10-8 (δm=690eV) is 13 keV less bound than the previously accepted value. The mass measurement is of great relevance for the recent charge-radius measurement of He8. The He8 mass is the first result from the newly-commissioned Penning trap: TITAN (TRIUMF's Ion Trap for Atomic and Nuclear science) at the ISAC (Isotope Separator and Accelerator) radioactive beam facility at TRIUMF.

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Direct mass measurement of the four-neutron halo nuclide He8

Abstract

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