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Detection of trace gases by means of the infrared laser photoacoustic technique

100%

Buscher S., Fink T., Dax A., Yu Q., Urban W.

International Agrophysics

1994

tom 08

nr 4

Preliminary analysis of the possibility of photoacoustic spectroscopy in photophysics of soil

88%

Zurawska A., Rochowski P., Szurkowski J.

Acta Agrophysica

2011

tom 17

nr 1[188]

In the present paper, an attempt was made to apply phothoacoustic spectroscopy (PAS) i.e., the particular version of photothermal spectroscopy where a quantity of energy deactivated into heat is evaluated, to quantify photophysical processes in a soil sample. As light sources three diodes emitting at blue, green and red bands of visible light spectrum were used. The obtained dependences of photoacoustic signal amplitude versus light modulation frequency did not follow predictions of Rosencwaig-Gersho classic theory since an additional heat exchange mechanism characteristic of powdered solid samples was likely to occur. In visible light spectrum band, two independent transition processes, achievable to our apparatus, were distinguished. The principal parameters: the relative photoacoustic signal amplitude and characteristic times (1.28 and 0.64 ms) of each revealed process were obtained.

Optical properties of maize seeds

75%

Hernandez A., Cruz O., Ivanov R., Dominguez P., Carballo C., Moreno I.

International Agrophysics

2011

tom 25

nr 3

Incorporation of stilbazolium merocyanines into biological membranes

75%

Niedbalska M., Gruda I.

Current Topics in Biophysics

1992

tom 16

nr 1

Photoacoustic spectra affected by fuel oil in the chlorococcal alga Scenedesmus armatus

51%

Tukaj Z., Szurkowski J.

Acta Physiologiae Plantarum

1993

tom 15

nr 4

Ograniczanie wyników

2 International Agrophysics

1 Acta Agrophysica

1 Acta Physiologiae Plantarum

1 Current Topics in Biophysics

2 Szurkowski J.

1 Buscher S.

1 Carballo C.

1 Cruz O.

1 Dax A.

1 Dominguez P.

1 Fink T.

1 Gruda I.

1 Hernandez A.

1 Ivanov R.

1 Moreno I.

1 Niedbalska M.

1 Rochowski P.

1 Tukaj Z.

1 Urban W.

1 Yu Q.

1 Zurawska A.

2 2011

1 1994