M. Wakasugi, et al., Nucl. Instr. and Meth. A 532 (2004) Total length 650mm Trapping region 〜 260mm 42 thin electrodes are stacked every 11 mm. Be(t=1mm) window 110 mm 35 mm Inside the SCRIT
M : Mass of nucleus | F c (q) | 2 Momentum transfer (MeV/c)
Energy of e - beam
Residual gases
Scattered electron
PRL 100, (2008)
PRL 102, (2009)
Non-uniform distribution
ions (a) (c) (b) (d) (e) SCRIT Longitudinal potential ions trapped ions
Elastic electron scattering e e’ q r (fm) c (r)(fm -3 )x He 12 C 16 O 40 Ca 48 Ca 208 Pb elastic scattering cross section is largest (up to medium momentum transfer region) charge density distribution (charge form factor) beyond mean-square charge radius by IS,muonic X-ray | F c (q) | 2 Momentum transfer (MeV/c)
Cs ions Cycle #1Cycle #2Cycle #3Cycle #4 Total Cycle number is 18 in 2 seconds measurement 110 ms