alfa čestica

alfa čestica

Helium nuclei emitted as a result of the radioactive decay of trace amounts of naturally occurring uranium and thorium found in semiconductor packaging materials. Alpha particles, if not properly controlled, can cause soft errors in dynamic memories.

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Bransch/domän: Semiconductors
Category: Semiconductor quality
Company: National Semiconductor
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alfa-čestica

Astronomy; General astronomy

1) Nucleus formed by the α-process (q.v.) (see even-even nuclei.) 2) Particle first discovered in radioactive α decay, and later identified as helium nuclei (two protons and two ...

alfa-čestica

Chemistry; General chemistry

Čestica koju obično izbacuju radioaktivne jezgre, a sastoji se od dva protona i dva neutrona. Alfa-čestice su jezgre helija. Alfa-čestice imaju masu od 6.644 655 98 × 10-27 kg ili ...

čestica

Pharmaceutical; Medical devices;

a tiny mass of material.

čestica

Electrical equipment; Fuel cell

Particulates, alternatively referred to as particulate matter (PM) or fine particles, are tiny particles of solid or liquid suspended in a gas.

difuzno područje

Semiconductors; Semiconductor quality

A portion of the die where impurities have been diffused into the surface of the silicon at high temperature to change its electrical characteristics through the creation of a ...

primalac

Semiconductors; Semiconductor quality

An impurity that can make a semiconductor P-type by accepting valence electrons, thereby leaving "holes" in the valence band of the semiconductor device. The holes act like ...

legiranje

Semiconductors; Semiconductor quality

The step in the fabrication process immediately following evaporation. This process alloys the conductive metal which had been deposited on the die surface to that surface, thus ...

analogni uređaj

Semiconductors; Semiconductor quality

A microcircuit in which the output is a mathematical function of the input.

rasprašenje

Semiconductors; Semiconductor quality

A method of producing thin films by freeing molecules from a solid source through ionic bombardment in order to deposit them on a nearby surface.

arhitektura

Semiconductors; Semiconductor quality

The functional design of a complex component, circuit or system, including both its hardware and its compatibility with external hardware and software.

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Bransch/domän: Anatomy Category: Cytology

stanice

Stanice su temeljne funkcionalne jedinice života (od njih su sastavljeni svi organizmi). Otkrio ih je Robert Hooke 1665. godine. Riječ stanica dolazi ...