X-Ray Production and Target Interactions Crossword Puzzle

QUESTIONS LIST:

• thorium: sometimes added to tungsten in filament
• space charge effect: with the buildup of electrons by the filament, the electrons' negative charges begin to oppose the emission of additional electrons
• positive: charge of anode; pollyanna encourages us to be more _ about life.
• thermionic emission: the process of boiling off electrons from the filament using heat.
• vacuum tube: removes all air so gases do not interfere with x-ray production.
• nickel: material used in focusing cup; 5 cent piece
• bremsstrahlung: a target interaction that occurs when projectile electrons are slowed down or stopped in the anode
• molybdenum: material used in majority of anode and focusing cup
• focusing cup: houses the filaments in the cathode; creates electron stream
• filament: source of electrons; part of the cathode; two sizes
• cathode: negatively charged end of x-ray tube
• electrons: negatively charged part of an atom
• anode: positively charged end of x-ray tube
• tungsten: main material used in filament and target
• characteristic: a target interaction that occurs when the projectile electron passes near an orbital electron, ejects it from its orbit, and causes a cascade
• negative: charge of cathode; people who are catty talk about others in a _ way.
• rhenium: combined with tungsten to create target on anode.