The heavy-ion species used for the SEE studies on this product were provided and delivered by:
- Michigan State University (MSU) Facility for Rare Isotope Beams (FRIB) using a linear accelerator and an advanced electron cyclotron resonance (ECR) ion source. At the fluxes used, ion beams had good flux stability and high irradiation uniformity as the beam is collimated to a maximum of 20mm x 20mm square cross-sectional area for the in-vacuum scintillator. Uniformity is achieved by scattering on a Cu foil and then performing magnetic defocusing. The flux of the beam is regulated over a broad range spanning several orders of magnitude. For these studies, ion flux of 9.36 x 104 to 1.07 x 105 ions/cm2 ·s was used to provide heavy-ion fluences of 1.00 x 107 ions/cm2.
Table 3-1 Ions and LETEFF Used for SEE Characterization| Ion Type | Location | Angle of Incidence | FLUX (ions·cm2/mg) | FLUENCE (# ions) | LETEFF (MeV-cm2/mg) |
|---|
129Xe | MSU | 0° | 1.00 × 105 | 1.00 × 107 | 50.5 |
84Kr | MSU | 0° | 1.00 × 104 | 1.00 × 106 | 35.4 |
40Ar | MSU | 0° | 1.00 × 104 | 1.00 × 106 | 7.9 |