Nuclear Charge Radii of 9,11Li: The Influence of Halo Neutrons

Journal Article · Fri Jan 27 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.033002· OSTI ID:877574

Sanchez, Rodolfo; Nortershauser, W; Ewald, G; Albers, Daniel; Behr, John; Bricault, Pierre; Bushaw, Bruce A; Dax, A; Dilling, Jens; Dombsky, Marik; Drake, Gordon W. F.; Gotte, S; Kirchner, R G; Kluge, H J; Lassen, J; Kuhl, T H; Levy, C.D. P.; Pearson, Matthew; Prime, Erika; Ryjkov, Vladimir L ; Wojtaszek, A; Yan, Z C; Zimmerman, C

The nuclear charge radius of 11Li has been determined for the first time by high precision laser spectroscopy. On-line measurements at TRIUMF-ISAC yielded a 7Li ? 11Li isotope shift (IS) of 25 101.23(13) MHz for the Doppler-free 2s 2S1=2 ! 3s 2S1=2 transition. IS precision for all other bound Li isotopes was also improved. Differences from calculated mass-based IS yield values for change in charge radius along the isotope chain. The charge radius decreases monotonically from 6Li to 9Li, and then increases from 2.216(35) fm to 2.467(37) fm for 11Li. This is compared to various models, and it is found that a combination of halo neutron correlation and intrinsic core excitation best reproduces the experimental results.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 877574
• Report Number(s): PNNL-SA-45883; PRLTAO; KC0302020; TRN: US0601615
• Journal Information: Physical Review Letters, Vol. 96, Issue 3; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCURACY
ATOMIC NUMBER
EXCITATION
LASER SPECTROSCOPY
NEUTRONS
SPECTRAL SHIFT