Patterson group · UCSB · plan view schematic

Inelastic Recoil Spectroscopy — apparatus map

Cryogenic ion trap · single-molecule inelastic recoil spectroscopy. Click any component for how it works, the numbers, and the design reasoning.
Crystal
1 × ⁸⁸Sr⁺ + 1 molecular ion
Trap drive
Ω = 2π · 1.63 MHz · q ≈ 0.2
Trap pressure
~4×10⁻⁷ Torr cryo · 10× warm
schematic · not to scale · hover to identify, click for detail
plan view · from above · not to scale GM cryocooler SRDK-415D 5.7 K 60 K 300 K resonator ×8 5 MHz LPF Rigol AWG 11 Vpp loading recoil Ne He 13 K EC EC Paul trap + CCD (30%) PMT (70%) below trap · out of plane Extrel QMF leak valve EI ionizer Sr–Al target 532 nm Minilite II CEM 422 nm MOGLabs ECDL Rb-referenced 1092 nm DFB repump mid-IR OPO ~6 cm⁻¹ optics bench · 295 K INELASTIC RECOIL SPECTROSCOPY — PLAN VIEW PATTERSON GROUP · UCSB REF: RSI 94, 075105 (2023) REV 2026-07 SCALE: NTS
532 load 422 cool 1092 repump (dashed) mid-IR (dashed) 60 K 5.7 K 13 K gas line trap electrodes windows