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Nuclear Charge Radius of 6 He - Madhusudan Ojha( PHYSICS 621)

Nuclear Charge Radius of 6 He - Madhusudan Ojha( PHYSICS 621). 6 He(t 1/2 =807 ms) offers the unique opportunity to study interactions in low density neutron –rich matter. Measurement of charge radii can probe the interaction of the neutron halo with the 4 He-like core. Method:.

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Nuclear Charge Radius of 6 He - Madhusudan Ojha( PHYSICS 621)

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  1. Nuclear Charge Radius of 6He- Madhusudan Ojha( PHYSICS 621) • 6He(t1/2=807 ms) offers the unique opportunity to study interactions in low density neutron –rich matter. • Measurement of charge radii can probe the interaction of the neutron halo with the 4He-like core. Method: 6 He Energy level • This measurement helps to reveal the • three-nucleon forces inside the nucleus • The results of the measurements is compared with values predicted by various clusture models • The result is also compared with ab initio QMC • calculations using a modern nuclear potential. IS(23S1-23P2)= 34473.625(13) MHz +1.210(<rc2>He4- <rc2>He6)MHz/fm2 IS(23S1-33P2)= 43196.202(16)MHz +1.008 (<rc2>He4- <rc2>He6)MHz/fm2 Atomic Theory Calculation: (Drake G.,2004) 100 KHz error in IS 1% error in 6He radius. Present Experiment: Challege: High Precision Requirement Charge Radius of 4He = 1.673(1) fm, spectroscopy of muonic 4He, E.Borie et al(1978)

  2. 6He Single Atom Spectroscopy 6He trapping rate~2/min Atom Trapping of 6He

  3. 6He Nuclear Charge Radius

  4. A proving Ground for Nuclear Structure Theories <rc2>1/2 = 1.912±0.018 fm

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