Radiant Properties of Strong Shock Waves in Argon

William H. Taylor; John W. Kane

doi:10.1364/AO.6.001493

Applied Optics
Vol. 6,
Issue 9,
pp. 1493-1495
(1967)
•https://doi.org/10.1364/AO.6.001493

Radiant Properties of Strong Shock Waves in Argon

William H. Taylor and John W. Kane

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William H. Taylor and John W. Kane, "Radiant Properties of Strong Shock Waves in Argon," Appl. Opt. 6, 1493-1495 (1967)

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Abstract

Measurements of the visible radiation emitted by one dimensional, explosively generated, shock waves in argon initially at 1 atm are reported. A time-resolved spectrograph and calibrated photodetectors were used to measure the intensity of the source at 5450 Å and 4050 Å. The results show that explosive induced shock waves in argon having shock velocities in the range 8–9 mm/μsec radiate at these wavelengths like a blackbody having a temperature of approximately 23,000°K.

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Experiment^a	Wavelength region	Peak power density (W/cm²/Å)	Peak equivalent blackbody temperature (°K)
1	5450 Å	34.4	22,900
1	4050 Å	53.2	17,700
2	5450 Å	33.2	22,500
2	4050 Å	114	25,700
3	5450 Å	13.3	14,000
3	4050 Å	6.8	19,800
4	5450 Å	38.4	24,500
4	4050 Å	92.5	23,100

Experiment^b	Wavelength region	Time (μsec)	Power density (W/cm²/Å)	Equivalent blackbody temperature (°K)
2	5450 Å	0	34.4	22,500
		2	30.7	21,400
		4	28.8	20,700
		5	25.9	19,500
	4050 Å	0	114	25,700
		2	85.3	22,200
		4	63	19,100
		5	48.5	17,100
4	5450 Å	0	38.4	24,500
		2	34.6	23,200
		4	31.0	21,500
	4050 Å	0	92.5	23,100
		2	57	18,300
		4	41	15,900

Experiment^a	Wavelength region	Peak power density (W/cm²/Å)	Peak equivalent blackbody temperature (°K)
1	5450 Å	34.4	22,900
1	4050 Å	53.2	17,700
2	5450 Å	33.2	22,500
2	4050 Å	114	25,700
3	5450 Å	13.3	14,000
3	4050 Å	6.8	19,800
4	5450 Å	38.4	24,500
4	4050 Å	92.5	23,100

Experiment^b	Wavelength region	Time (μsec)	Power density (W/cm²/Å)	Equivalent blackbody temperature (°K)
2	5450 Å	0	34.4	22,500
		2	30.7	21,400
		4	28.8	20,700
		5	25.9	19,500
	4050 Å	0	114	25,700
		2	85.3	22,200
		4	63	19,100
		5	48.5	17,100
4	5450 Å	0	38.4	24,500
		2	34.6	23,200
		4	31.0	21,500
	4050 Å	0	92.5	23,100
		2	57	18,300
		4	41	15,900

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Applied Optics