Si(Li) detector
E561163
A Si(Li) detector is a lithium-drifted silicon semiconductor radiation detector historically used for high-resolution X-ray and gamma-ray spectroscopy.
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
semiconductor radiation detector
ⓘ
silicon detector ⓘ |
| basedOn | silicon p-i-n diode structure ⓘ |
| detects |
X-ray photons
ⓘ
gamma-ray photons ⓘ |
| developedIn | 1960s ⓘ |
| hasAbbreviation | Si(Li) ⓘ |
| hasAdvantage |
good energy resolution for X-rays
ⓘ
relatively high detection efficiency for low-energy photons ⓘ |
| hasComponent |
depleted silicon volume
ⓘ
lithium-drifted region ⓘ p-n junction ⓘ |
| hasDepletionDepth | on the order of a few millimeters ⓘ |
| hasEnergyRange |
approximately 1 keV to tens of keV for X-rays
ⓘ
up to a few MeV for gamma rays ⓘ |
| hasEnergyResolution | on the order of 150 eV at 5.9 keV ⓘ |
| hasLimitation |
limited active area compared to some alternatives
ⓘ
mechanically fragile crystal ⓘ requires low-temperature operation to reduce leakage current ⓘ |
| hasNoiseSource |
Fano noise in silicon
ⓘ
leakage current ⓘ |
| hasOperatingTemperature | about 77 K ⓘ |
| hasSignalReadout | charge-sensitive preamplifier ⓘ |
| hasTypicalEntranceWindow | thin beryllium window ⓘ |
| hasTypicalThickness | a few millimeters ⓘ |
| historicallyPrecededBy | gas-filled proportional counter ⓘ |
| historicallySucceededBy |
high-purity germanium detector
ⓘ
silicon drift detector ⓘ |
| isReplacedInModernSystemsBy | silicon drift detector in many X-ray applications ⓘ |
| isSensitiveTo | radiation damage ⓘ |
| isUsedWith |
multichannel analyzer
ⓘ
pulse shaping amplifier ⓘ |
| operatesBy | semiconductor ionization ⓘ |
| requires |
cryogenic cooling
ⓘ
lithium drifting process ⓘ vacuum or low-pressure environment at the entrance window ⓘ |
| requiresBiasVoltage | reverse bias ⓘ |
| typicallyCooledTo | liquid nitrogen temperature ⓘ |
| usedFor |
gamma-ray spectroscopy
ⓘ
high-resolution X-ray spectroscopy ⓘ |
| usedIn |
X-ray fluorescence analysis
ⓘ
astrophysical X-ray measurements ⓘ electron probe microanalysis ⓘ materials analysis ⓘ nuclear spectroscopy ⓘ |
| usesMaterial | lithium-drifted silicon ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.