Observation of a Large Reaction Cross Section in the Drip-Line NucleusC<mml:mprescripts/><mml:none/>22

2010/02/08 by K. Tanaka, Takayuki Yamaguchi, Toshio Suzuki +34 · 241 citations
Physics and Astronomy · #Nuclear physics research studies #Astronomical and nuclear sciences #Atomic and Molecular Physics #Physics #Glauber #Atomic physics #Neutron #Halo #Isotope #Sigma #Halo nucleus #Nuclear physics #Valence (chemistry) #Scattering #Quantum mechanics

paper · doi:10.1103/physrevlett.104.062701

published in Physical Review Letters 104(6), 062701 (American Physical Society)

openalex publication_date 2010/02/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/21

Abstract

Reaction cross sections (\ensuremathσ_R) for ¹⁹C, ²⁰C and the drip-line nucleus ²²C on a liquid hydrogen target have been measured at around 40A MeV by a transmission method. A large enhancement of \ensuremathσ_R for ²²C compared to those for neighboring C isotopes was observed. Using a finite-range Glauber calculation under an optical-limit approximation the rms matter radius of ²²C was deduced to be 5.4\ifmmode±\else\textpm\fi0.9 fm. It does not follow the systematic behavior of radii in carbon isotopes with N\ensuremath≤14, suggesting a neutron halo. It was found by an analysis based on a few-body Glauber calculation that the two-valence neutrons in ²²C preferentially occupy the 1s_1/2 orbital.

Citations

• New Magic Number,N<mml:mspace/>=<mml:mspace/>16, near the Neutron Drip Line
• Nuclear Halos

Cited by

• Constraints on two-neutron separation energy in the Borromean 22C nucleus
• Scaling Limit Analysis of Borromean Halos
• Charge form factors of two-neutron halo nuclei in halo EFT
• Weakly Bound Li He ₂ 2 Molecules
• Borromean rings [wikipedia]

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