New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces

A. T. Gallant; J. C. Bale; T. Brunner; U. Chowdhury; S. Ettenauer; A. Lennarz; D. Robertson; V. V. Simon; A. Chaudhuri; J. D. Holt; A. A. Kwiatkowski; E. Mané; J. Menéndez; B. E. Schultz; M. C. Simon; C. Andreoiu; P. Delheij; M. R. Pearson; H. Savajols; A. Schwenk; J. Dilling

doi:10.1103/PhysRevLett.109.032506

New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces

A. T. Gallant, J. C. Bale, T. Brunner, U. Chowdhury, S. Ettenauer, A. Lennarz, D. Robertson, V. V. Simon, A. Chaudhuri, J. D. Holt, A. A. Kwiatkowski, E. Mané, J. Menéndez, B. E. Schultz, M. C. Simon, C. Andreoiu, P. Delheij, M. R. Pearson, H. Savajols, A. SchwenkJ. Dilling

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104 Scopus citations

Abstract

We present precision Penning trap mass measurements of neutron-rich calcium and potassium isotopes in the vicinity of neutron number N=32. Using the TITAN system, the mass of K51 was measured for the first time, and the precision of the Ca51,52 mass values were improved significantly. The new mass values show a dramatic increase of the binding energy compared to those reported in the atomic mass evaluation. In particular, Ca52 is more bound by 1.74MeV, and the behavior with neutron number deviates substantially from the tabulated values. An increased binding was predicted recently based on calculations that include three-nucleon (3N) forces. We present a comparison to improved calculations, which agree remarkably with the evolution of masses with neutron number, making neutron-rich calcium isotopes an exciting region to probe 3N forces.

Original language	English
Article number	032506
Journal	Physical Review Letters
Volume	109
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.109.032506
State	Published - Jul 20 2012
Externally published	Yes

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Gallant, A. T., Bale, J. C., Brunner, T., Chowdhury, U., Ettenauer, S., Lennarz, A., Robertson, D., Simon, V. V., Chaudhuri, A., Holt, J. D., Kwiatkowski, A. A., Mané, E., Menéndez, J., Schultz, B. E., Simon, M. C., Andreoiu, C., Delheij, P., Pearson, M. R., Savajols, H., ... Dilling, J. (2012). New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces. Physical Review Letters, 109(3), Article 032506. https://doi.org/10.1103/PhysRevLett.109.032506

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title = "New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces",

abstract = "We present precision Penning trap mass measurements of neutron-rich calcium and potassium isotopes in the vicinity of neutron number N=32. Using the TITAN system, the mass of K51 was measured for the first time, and the precision of the Ca51,52 mass values were improved significantly. The new mass values show a dramatic increase of the binding energy compared to those reported in the atomic mass evaluation. In particular, Ca52 is more bound by 1.74MeV, and the behavior with neutron number deviates substantially from the tabulated values. An increased binding was predicted recently based on calculations that include three-nucleon (3N) forces. We present a comparison to improved calculations, which agree remarkably with the evolution of masses with neutron number, making neutron-rich calcium isotopes an exciting region to probe 3N forces.",

author = "Gallant, {A. T.} and Bale, {J. C.} and T. Brunner and U. Chowdhury and S. Ettenauer and A. Lennarz and D. Robertson and Simon, {V. V.} and A. Chaudhuri and Holt, {J. D.} and Kwiatkowski, {A. A.} and E. Man{\'e} and J. Men{\'e}ndez and Schultz, {B. E.} and Simon, {M. C.} and C. Andreoiu and P. Delheij and Pearson, {M. R.} and H. Savajols and A. Schwenk and J. Dilling",

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Gallant, AT, Bale, JC, Brunner, T, Chowdhury, U, Ettenauer, S, Lennarz, A, Robertson, D, Simon, VV, Chaudhuri, A, Holt, JD, Kwiatkowski, AA, Mané, E, Menéndez, J, Schultz, BE, Simon, MC, Andreoiu, C, Delheij, P, Pearson, MR, Savajols, H, Schwenk, A & Dilling, J 2012, 'New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces', Physical Review Letters, vol. 109, no. 3, 032506. https://doi.org/10.1103/PhysRevLett.109.032506

TY - JOUR

T1 - New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces

AU - Gallant, A. T.

AU - Bale, J. C.

AU - Brunner, T.

AU - Chowdhury, U.

AU - Ettenauer, S.

AU - Lennarz, A.

AU - Robertson, D.

AU - Simon, V. V.

AU - Chaudhuri, A.

AU - Holt, J. D.

AU - Kwiatkowski, A. A.

AU - Mané, E.

AU - Menéndez, J.

AU - Schultz, B. E.

AU - Simon, M. C.

AU - Andreoiu, C.

AU - Delheij, P.

AU - Pearson, M. R.

AU - Savajols, H.

AU - Schwenk, A.

AU - Dilling, J.

PY - 2012/7/20

Y1 - 2012/7/20

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AB - We present precision Penning trap mass measurements of neutron-rich calcium and potassium isotopes in the vicinity of neutron number N=32. Using the TITAN system, the mass of K51 was measured for the first time, and the precision of the Ca51,52 mass values were improved significantly. The new mass values show a dramatic increase of the binding energy compared to those reported in the atomic mass evaluation. In particular, Ca52 is more bound by 1.74MeV, and the behavior with neutron number deviates substantially from the tabulated values. An increased binding was predicted recently based on calculations that include three-nucleon (3N) forces. We present a comparison to improved calculations, which agree remarkably with the evolution of masses with neutron number, making neutron-rich calcium isotopes an exciting region to probe 3N forces.

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New precision mass measurements of neutron-rich calcium and potassium isotopes and three-nucleon forces

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