Changes made in the 1998 PACS Scheme

PACS Categories Introduced in 1998 Edition

01.30.Xx Electronic publications
03.67.-a Quantum information
03.67.Dd Quantum cryptography
03.67.Hk Quantum communication
03.67.Lx Quantum computation
07.85.Tt X-ray microscopes
34.85.+x Positron scattering

Modified PACS Categories in 1998 Edition

41.50.+h X-ray beams and x-rays optics
42.50.Ct Quantum description of interaction of light and matter; related experiments
42.65.Sf Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics
47.54.+r Pattern selection; pattern formation
97.30.Kn RR Lyrae stars; RV Tauri and PV Telescopii variables
97.30.Nr Flare stars (UV Ceti, RS Canum Venaticorum, FU Orionis, R Coronae Borealis variables, etc.)
98.65At Interacting galaxies; galaxy pairs and triples; galaxy mergers