09-06-2016 дата публикации
Номер: US20160163495A1
Автор:
Barrows Preston J.,
Campbell Logan D.,
Gribb Tye T.,
KOBERNIK ARNE V.,
Lee Jin W.,
Meaney Kevin D.,
Radel Ross F.,
Risley Eric D.,
SENGBUSCH EVAN R.,
SEYFERT CHRISTOPHER M.,
Sherman Joseph D.,
Swanson Daniel J.
A negative ion source includes a plasma chamber, a microwave source, a negative ion converter, a magnetic filter and a beam formation mechanism. The plasma chamber contains gas to be ionized. The microwave source transmits microwaves to the plasma chamber to ionize the gas into atomic species including hyperthermal neutral atoms. The negative ion converter converts the hyperthermal neutral atoms to negative ions. The magnetic filter reduces a temperature of electrons provided between the plasma chamber and the negative ion converter. The beam formation mechanism extracts the negative ions. 1. A negative ion source comprising:a plasma chamber containing a gas to be ionized;a microwave source configured to transmit microwaves to the plasma chamber to ionize the gas into atomic species including hyperthermal neutral atoms;a negative ion source converter configured to convert the hyperthermal neutral atoms to negative ions;a magnetic filter configured to reduce a temperature of electrons between the plasma chamber and the negative ion source converter; anda beam formation mechanism configured to extract the negative ions.2. The negative ion source of claim 1 , wherein the negative ion source is a continuous wave negative ion source.3. The negative ion source of claim 1 , wherein the plasma chamber has a high voltage and the microwave source is at ground potential.4. The negative ion source of claim 1 , further comprising at least one waveguide configured to electrically isolate the plasma chamber and the microwave source claim 1 , the at least one waveguide comprising a flange configured to allow a break in the waveguide to be insulated with air.5. (canceled)6. The negative ion source of claim 1 , wherein the gas to be ionized is hydrogen claim 1 , the hyperthermal neutral atoms produced are hyperthermal neutral hydrogen atoms claim 1 , and the negative ions produced are negative hydrogen ions.7. The negative ion source of claim 1 , wherein the microwave source ...
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