secondary emission: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “secondary emission” mean?
A phenomenon where a surface bombarded with high-energy particles (electrons or ions) emits additional particles.
Audio
Pronunciation
Definition
Meaning and Definition
A phenomenon where a surface bombarded with high-energy particles (electrons or ions) emits additional particles.
In broader contexts, it can refer to any consequential or indirect output produced as a secondary effect from a primary stimulus or action.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage or meaning. Spelling and pronunciation conventions follow standard BrE/AmE patterns for the component words.
Connotations
Neutral technical term in both. No regional connotations.
Frequency
Equally rare in both dialects, confined to specialised fields like physics and engineering.
Grammar
How to Use “secondary emission” in a Sentence
The secondary emission from [surface/material] was measured.Secondary emission occurs when [primary particles] strike [a target].Vocabulary
Collocations
Examples
Examples of “secondary emission” in a Sentence
verb
British English
- The dynode is designed to secondary-emit electrons efficiently. (Note: highly technical and rare verb use)
- The coating secondary-emits under ion bombardment.
American English
- The material can secondary-emit when struck by electrons.
- We need to characterize how the surface secondary-emits.
adverb
British English
- The electrons were emitted secondarily from the impact site. (Rare)
- The signal was generated secondarily via emission.
American English
- The current increased secondarily due to the emission process.
- Particles were produced secondarily in the chamber.
adjective
British English
- The secondary-emission current was recorded.
- We observed a secondary-emission phenomenon.
American English
- The secondary-emission coefficient is crucial for multiplier design.
- They installed a secondary-emission detector.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in physics, materials science, and electrical engineering research and textbooks.
Everyday
Not used in everyday conversation.
Technical
The primary context. Used in discussions of vacuum tubes, photomultipliers, particle detectors, and surface science.
Vocabulary
Synonyms of “secondary emission”
Strong
Neutral
Weak
Vocabulary
Antonyms of “secondary emission”
Watch out
Common Mistakes When Using “secondary emission”
- Pronouncing 'emission' as /iːˈmɪʃən/ (starting with a long 'e') instead of /ɪˈmɪʃən/ or /əˈmɪʃən/.
- Using it as a verb, e.g., 'The surface secondary-emits electrons.' (Use 'emits secondary electrons' instead).
- Confusing it with 'thermionic emission' or 'field emission', which are different primary emission mechanisms.
FAQ
Frequently Asked Questions
No. Radiation is a broader term for energy emission. Secondary emission is a specific type of particle (usually electron) emission caused by particle bombardment.
Most likely in advanced physics or engineering contexts, such as when studying electron multipliers, vacuum tube technology, or the behaviour of spacecraft surfaces in plasma.
It is extremely rare outside its technical definition. One might theoretically use it to describe indirect consequences (e.g., 'The policy had a secondary emission of public dissent'), but this is not standard usage.
Primary emission is the direct release of particles from a source (e.g., heating a filament to emit electrons). Secondary emission is the indirect release of particles from a *different* material that has been struck by the primary particles.
A phenomenon where a surface bombarded with high-energy particles (electrons or ions) emits additional particles.
Secondary emission is usually technical/scientific in register.
Secondary emission: in British English it is pronounced /ˌsɛkənd(ə)ri ɪˈmɪʃ(ə)n/, and in American English it is pronounced /ˈsɛkənˌdɛri əˈmɪʃən/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. It is a technical term not used idiomatically.”
Learning
Memory Aids
Mnemonic
Think of a game of pool: the cue ball (primary emission) strikes another ball, causing it to move (secondary emission).
Conceptual Metaphor
SECONDARY EMISSION IS A CHAIN REACTION / A BOUNCING EFFECT.
Practice
Quiz
What is secondary emission most directly associated with?