Do any Varian lamps have solid cathodes?
Cathodes for lamps such as Cu, Fe, Ni and Al are machined from the solid metal. Lamps such as V, Pd, Au and Ir have sheet metal inserts. These are all single element lamps. There are a variety of multi element lamps available with up to six elements incorporated into a single lamp. Multi element lamps have similar performance to a single element lamp in the convenience of one lamp.
