Abstract: The present invention provides a method for producing a broad range of therapeutic radiation energy levels with a source of radiation that is operated to produce photons or particles at a first energy that are directed at a treatment site for a predetermined absorbed dose. The linear accelerator is then operated to produce photons or particles at a second energy directed at the treatment site for another predetermined absorbed dose. The appropriate selection of the first and second absorbed doses yields an absorbed dose at the treatment site equivalent to the dose produced by photons having an energy that is intermediate of the first and second energies. Thus, a dual energy linear accelerator may be operated according to the method to yield a continuous range of energies.

Abstract: The present invention provides a method for producing a broad range of therapeutic radiation energy levels with a source of radiation that is operated to produce photons or particles at a first energy that are directed at a treatment site for a predetermined absorbed dose. The linear accelerator is then operated to produce photons or particles at a second energy directed at the treatment site for another predetermined absorbed dose. The appropriate selection of the first and second absorbed doses yields an absorbed dose at the treatment site equivalent to the dose produced by photons having an energy that is intermediate of the first and second energies. Thus, a dual energy linear accelerator may be operated according to the method to yield a continuous range of energies.

Abstract: An adhesive is provided for bonding cyanate ester composite parts together which is also plateable with metal once chemically etched. The adhesive comprises a polymeric matrix and a filler of cyanate ester polymer. The polymeric matrix comprises at least one polyepoxide resin and a curing agent, while the cyanate ester polymer filler is present in the adhesive as a powder. In practice, the present adhesive is applied to the surface of cyanate ester composite articles to be bonded and is allowed to cure at room temperature. Thereafter, the surface of the assembly is chemically etched and then plated with metal. The present adhesive enable the complete coverage of the cyanate ester composite assembly with the plated metal, including the adhesive bondlines.

Abstract: An adhesive is provided for bonding cyanate ester composite parts together which is also plateable with metal once chemically etched. The adhesive comprises a polymeric matrix and a filler of cyanate ester polymer. The polymeric matrix comprises at least one polyepoxide resin and a curing agent, while the cyanate ester polymer filler is present in the adhesive as a powder. In practice, the present adhesive is applied to the surface of cyanate ester composite articles to be bonded and is allowed to cure at room temperature. Thereafter, the surface of the assembly is chemically etched and then plated with metal. The present adhesive enable the complete coverage of the cyanate ester composite assembly with the plated metal, including the adhesive bondlines.