Papers

Centimeter Wavelength Papers

Paul G. Steffes, Thomas R. Hanley,Bryan M. Karpowicz, Kiruthika Devaraj, Shand Noorizadeh, Danny Suong, Garrett Chinsomboon, Amadeo Bellotti,Micheal A. Janssen, Scott J. Bolton, "High-Precision Laboratory Measurements Supporting Retrieval of Water Vapor, Gaseous Ammonia, and Aqueous Ammonia Clouds with the Juno Microwave Radiometer (MWR)," Space Science Reviews, in press. [Proof]

Paul G. Steffes, Patrick Shahan, G. Christopher Barisich, Amadeo Bellotti, "Laboratory measurements of the 3.7–20 cm wavelength opacity of sulfur dioxide and carbon dioxide under simulated conditions for the deep atmosphere of Venus," Icarus, Volume 245, Issue 1, January 2015, pp. 153-161. [Proof, Data]

Kiruthika Devaraj, Paul G. Steffes, Danny Duong, "The centimeter-wavelength opacity of ammonia under deep jovian conditions," Icarus, Volume 241, Issue 1, October 2014, pp. 165-179. [Proof, Data]

Danny Duong, Paul G. Steffes, Sahand Noorizadeh, "The microwave properties of the jovian clouds: A new model for the complex dielectric constant of aqueous ammonia," Icarus, Volume 229, Issue 1, February 2014, pp. 121-130. [Proof]

K. Devaraj, P. G. Steffes, and B. M. Karpowicz, "Reconciling the centimeter- and millimeter-wavelength ammonia absorption spectra under jovian conditions: Extensive millimeter-wavelength measurements and a consistent model," Icarus, Volume 212, Issue 1, March 2011, pp. 224-235. [Proof]

B. M. Karpowicz and P. G. Steffes, "In search of water vapor on Jupiter: Laboratory measurements of the microwave properties of water vapor under simulated jovian conditions," Icarus, Volume 212, Issue 1, March 2011, pp. 210-223. [Proof]

T. R. Hanley, P. G. Steffes, and B. M. Karpowicz, "A new model of the hydrogen and helium-broadened microwave opacity of ammonia based on extensive laboratory measurements", Icarus, vol. 202, pp. 316--335, July 2009. [data,model].

T. R. Hanley and P. G. Steffes, "Laboratory measurements of the microwave opacity of hydrochloric acid vapor in a carbon dioxide atmosphere," Icarus, Volume 177, Issue 1, September 2005, pp. 286-290.

J. P. Hoffman, P. G. Steffes and, D. R. DeBoer, "Laboratory Measurements of the Microwave Opacity of Phosphine: Opacity Formalism and Application to the Atmospheres of the Outer Planets", Icarus, vol. 152, pp. 172-184, July 2001.

J. P. Hoffman, P. G. Steffes and, D. R. DeBoer, "Laboratory Measurements of Phosphine's Microwave Opacity: Implications for Planetary Radio Science", Icarus, vol. 140, pp. 235-238, July 1999.

M. A. Kolodner and P. G. Steffes, "The Microwave Absorption and Abundance of Sulfuric Acid Vapor in Venus Atmosphere Based on New Laboratory Measurements, "Icarus, vol.32, pp.151-169, 1998.

D. R. DeBoer and P. G. Steffes, "Estimates of the Tropospheric Vertical Structure of Neptune Based on Microwave Radiative Transfer Studies, " Icarus, vol.123, pp.324-335, October 1996.

S. H. Suleiman, M. A. Kolodner, and P. G. Steffes, "Laboratory Measurement of the Temperature Dependence of Gaseous Sulfur Dioxide (SO2) Microwave Absorption with Application to the Venus Atmosphere, " Journal of Geophysical Research, vol.101, Number E2, pp.4623-4635, February 1996.

D. R. DeBoer and P. G. Steffes, "Laboratory Measurements of the Microwave Properties of (H2S) under Simulated Conditions with an Application to Neptune, "Icarus, vol.109, pp.325-366, June 1994.

T. R. Spilker, "New Laboratory Measurements on Ammonia Inversion Spectrum with Implication for Planetary Atmospheres, " Journal of Geophysical Research, vol. 98, pp.5539-5548, 1993.

P. G. Steffes, and J. M. Jenkins, "Laboratory Measurements of the Microwave Opacity of Gaseous Ammonia(NH3) under Simulated Conditions for the Jovian Atmosphere, "Icarus, vol.52, pp.35-47, October 1987.

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Millimeter Wavelength Papers

Amadeo Bellotti, Paul G. Steffes, "The millimeter-wavelength sulfur dioxide absorption spectra measured under simulated Venus conditions," Icarus, Volume 254, Issue 1, July 2015, pp. 153-161. [Proof, Data]

K. Devaraj, P. G. Steffes, and B. M. Karpowicz, "Reconciling the centimeter- and millimeter-wavelength ammonia absorption spectra under jovian conditions: Extensive millimeter-wavelength measurements and a consistent model," Icarus, Volume 212, Issue 1, March 2011, pp. 224-235. [Proof, Data]

P. N. Mohammed and P. G. Steffes, "Laboratory Measurements of the W-band (3.2 mm) Properties of Phosphine (PH3) and Ammonia (NH3) Under Simulated Conditions for the Outer Planets, " Journal of Geophysical Research, Vol. 109, Issue E7 doi:10.1029/2003JE002201 .

P. N. Mohammed and P. G. Steffes, "Laboratory Measurements of the Ka-band (7.5 mm to 9.2 mm) Opacity of Phosphine (PH3) and Ammonia (NH3) Under Simulater Conditions for the Cassini-Saturn Encounter, " Icarus, vol. 166, pp.  425-435, December 2003.

H. M. Pickett, R. L. Poynter, and E. A. Cohen, "Pressure Broadening of Phosphine by Hydrogen and Helium, " J. Quant. Spectrosc. Radiat. Transfer, vol. 26, pp. 197-198, 1994.

J. M. Dutta, C. R. Jones, T. M. Goyette and F. C. DeLucia, "The Hydrogen and Helium Pressure Broadening at Planetary Temperatures of the 183 and 380 GHz Transitions of Water Vapor," Icarus, vol. 102, pp. 232-239, April 1993.

A. K. Fahd and P. G. Steffes, "Laboratory Measurements of the Microwave and Millimeter-Wave Opacity of Gaseous Sulfur Dioxide (SO2) under Simulated Conditions for the Venus Atmosphere, "Icarus, vol.97, pp.200-210, June, 1992.

J. Joiner, P. G. Steffes, and K. S. Noll, "Search for Sulfur (H2S) on Jupiter at Millimeter Wavelengths, "IEEE Transactions on Microwave Theory and Techniques, vol.40, pp.1101-1109, June 1992.

A. K. Fahd and P. G. Steffes, "Laboratory Measurement of the Millimeter-Wave Properties of Liquid Sulfuric Acid (H2SO4),"Journal of Geophysical Research (Planets), vol.96, pp.17,463-17,470, September 25, 1991.

J. Joiner and P. G. Steffes, "Modeling of the Millimeter-Wave Emission of Jupiter Utilizing Laboratory Measurements of Ammonia (NH3) Opacity, "Journal of Geophysical Research (Planets), vol.96, pp.17,471-17,476, September 25, 1991.

J. Joiner, P. G. Steffes, and J. M. Jenkins, "Laboratory Measurements of the 7.5-9.38 mm Absorption of Gaseous Ammonia (NH3) under Simulated Jovian Conditions, "Icarus, vol.81, pp.386-395, 1989.

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Ammonia (NH3)

Paul G. Steffes, Thomas R. Hanley,Bryan M. Karpowicz, Kiruthika Devaraj, Shand Noorizadeh, Danny Suong, Garrett Chinsomboon, Amadeo Bellotti,Micheal A. Janssen, Scott J. Bolton, "High-Precision Laboratory Measurements Supporting Retrieval of Water Vapor, Gaseous Ammonia, and Aqueous Ammonia Clouds with the Juno Microwave Radiometer (MWR)," Space Science Reviews, in press. [Proof]

Kiruthika Devaraj, Paul G. Steffes, Danny Duong, "The centimeter-wavelength opacity of ammonia under deep jovian conditions," Icarus, Volume 241, Issue 1, October 2014, pp. 165-179. [Proof, Data]

Danny Duong, Paul G. Steffes, Sahand Noorizadeh, "The microwave properties of the jovian clouds: A new model for the complex dielectric constant of aqueous ammonia," Icarus, Volume 229, Issue 1, February 2014, pp. 121-130. [Proof]

K. Devaraj, P. G. Steffes, and B. M. Karpowicz, "Reconciling the centimeter- and millimeter-wavelength ammonia absorption spectra under jovian conditions: Extensive millimeter-wavelength measurements and a consistent model," Icarus, Volume 212, Issue 1, March 2011, pp. 224-235. [Proof, Data]

T. R. Hanley, P. G. Steffes, and B. M. Karpowicz, "A new model of the hydrogen and helium-broadened microwave opacity of ammonia based on extensive laboratory measurements", Icarus, vol. 202, pp. 316--335, July 2009. [data,model].

P. N. Mohammed, and P. G. Steffes, "Laboratory Measurements of the W-band (3.2 mm) Properties of Phosphine (PH3) and Ammonia (NH3) Under Simulated Conditions for the Outer Planets, " Journal of Geophysical Research, Vol. 109, Issue E7 doi:10.1029/2003JE002201.

P. N. Mohammed, and P. G. Steffes, "Laboratory Measurements of the Ka-band (7.5 mm to 9.2 mm) Opacity of Phosphine (PH3) and Ammonia (NH3) Under Simulater Conditions for the Cassini-Saturn Encounter, " Icarus, vol. 166, pp.425-435, December 2003.

D. R. DeBoer and P. G. Steffes, "Estimates of the Tropospheric Vertical Structure of Neptune Based on Microwave Radiative Transfer Studies, " Icarus, vol.123, pp.324-335, October 1996.

T. R. Spilker, "New Laboratory Measurements on Ammonia Inversion Spectrum with Implication for Planetary Atmospheres, " Journal of Geophysical Research, vol. 98, pp.5539-5548, 1993.

J. Joiner and P. G. Steffes, "Modeling of the Millimeter-Wave Emission of Jupiter Utilizing Laboratory Measurements of Ammonia (NH3) Opacity, "Journal of Geophysical Research (Planets), vol.96, pp.17,471-17,476, September 25, 1991.

J. Joiner, P. G. Steffes, and J. M. Jenkins, "Laboratory Measurements of the 7.5-9.38 mm Absorption of Gaseous Ammonia (NH3) under Simulated Jovian Conditions, "Icarus, vol.81, pp.386-395, 1989.

P. G. Steffes, and J. M. Jenkins, "Laboratory Measurements of the Microwave Opacity of Gaseous Ammonia(NH3) under Simulated Conditions for the Jovian Atmosphere, "Icarus, vol.52, pp.35-47, October 1987.

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Water (H2O)

B. M. Karpowicz and P. G. Steffes, "In search of water vapor on Jupiter: Laboratory measurements of the microwave properties of water vapor under simulated jovian conditions," Icarus, Volume 212, Issue 1, March 2011, pp. 210-223. [Proof]

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Hydrogen Sulfide (H2S)

D. R. DeBoer and P. G. Steffes, "Estimates of the Tropospheric Vertical Structure of Neptune Based on Microwave Radiative Transfer Studies, " Icarus, vol.123, pp.324-335, October 1996.

D. R. DeBoer and P. G. Steffes, "Laboratory Measurements of the Microwave Properties of (H2s) under Simulated Conditions with an Application to Neptune, "Icarus, vol.109, pp.325-366, June 1994.

J. Joiner, P. G. Steffes, and K. S. Noll, "Search for Sulfur (H2S) on Jupiter at Millimeter Wavelengths, "IEEE Transactions on Microwave Theory and Techniques, vol.40, pp.1101-1109, June 1992.

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Sulfur Dioxide (SO2) Gaseous

Amadeo Bellotti, Paul G. Steffes, "The millimeter-wavelength sulfur dioxide absorption spectra measured under simulated Venus conditions," Icarus, Volume 254, Issue 1, July 2015, pp. 153-161. [Proof, Data]

Paul G. Steffes, Patrick Shahan, G. Christopher Barisich, Amadeo Bellotti, "Laboratory measurements of the 3.7–20 cm wavelength opacity of sulfur dioxide and carbon dioxide under simulated conditions for the deep atmosphere of Venus," Icarus, Volume 245, Issue 1, January 2015, pp. 153-161. [Proof, Data]

S. H. Suleiman, M. A. Kolodner, and P. G. Steffes, "Laboratory Measurement of the Temperature Dependence of Gaseous Sulfur Dioxide (SO2) Microwave Absorption with Application to the Venus Atmosphere, " Journal of Geophysical Research, vol.101, Number E2, pp.4623-4635, February 1996.

A. K. Fahd and P. G. Steffes, "Laboratory Measurements of the Microwave and Millimeter-Wave Opacity of Gaseous Sulfur Dioxide (SO2) under Simulated Conditions for the Venus Atmosphere, "Icarus, vol.97, pp.200-210, June, 1992.

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Sulfuric Acid (H2SO4) Gas State

M. A. Kolodner and P. G. Steffes, "The Microwave Absorption and Abundance of Sulfuric Acid Vapor in Venus Atmosphere Based on New Laboratory Measurements, "Icarus, vol.32, pp.151-169, 1998.

A. K. Fahd and P. G. Steffes, "Laboratory Measurement of the Millimeter-Wave Properties of Liquid Sulfuric Acid (H2SO4),"Journal of Geophysical Research (Planets), vol.96, pp.17,463-17,470, September 25, 1991.

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Sulfuric Acid (H2SO4) Liquid State

A. K. Fahd and P. G. Steffes, "Laboratory Measurement of the Millimeter-Wave Properties of Liquid Sulfuric Acid (H2SO4),"Journal of Geophysical Research (Planets), vol.96, pp.17,463-17,470, September 25, 1991.

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Methane (CH4) and Water (H2O)

J. M. Jenkins and P. G. Steffes, "Constraints on the Microwave Opacity of Gaseous Methane and Water Vapor in the Jovian Atmosphere," Icarus, vol.76, pp.378-382, 1998.

J. M. Dutta, C. R. Jones, T. M. Goyette and F. C. DeLucia, "The Hydrogen and Helium Pressure Broadening at Planetary Temperatures of the 183 and 380 GHz Transitions of Water Vapor," Icarus, vol. 102, pp. 232-239, April 1993.

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Phosphine (PH3)

P. N. Mohammed, and P. G. Steffes, "Laboratory Measurements of the W-band (3.2 mm) Properties of Phosphine (PH3) and Ammonia (NH3) Under Simulated Conditions for the Outer Planets, " Journal of Geophysical Research, Vol. 109, Issue E7, doi:10.1029/2003JE002201.

P. N. Mohammed, and P. G. Steffes, "Laboratory Measurements of the Ka-band (7.5 mm to 9.2 mm) Opacity of Phosphine (PH3) and Ammonia (NH3) Under Simulater Conditions for the Cassini-Saturn Encounter, " Icarus, vol. 166, pp.  425-435, December 2003.

J. P. Hoffman, P. G. Steffes and, D. R. DeBoer, "Laboratory Measurements of  the Microwave Opacity of Phosphine: Opacity Formalism and Application to the Atmospheres of the Outer Planets, "Icarus, vol. 152, pp. 172-184, July 2001.

J. P. Hoffman, P. G. Steffes and, D. R. DeBoer, "Laboratory Measurements of Phosphine's Microwave Opacity: Implications for Planetary Radio Science, "Icarus, vol. 140, pp. 235-238, July 1999.

H. M. Pickett, R. L. Poynter, and E. A. Cohen, "Pressure Broadening of Phosphine by Hydrogen and Helium, " J. Quant. Spectrosc. Radiat. Transfer, vol. 26, pp. 197-198, 1994.

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Measurement Techniques

K. Devaraj, P. G. Steffes, and B. M. Karpowicz, "Reconciling the centimeter- and millimeter-wavelength ammonia absorption spectra under jovian conditions: Extensive millimeter-wavelength measurements and a consistent model," Icarus, Volume 212, Issue 1, March 2011, pp. 224-235. [Proof]

T. R. Hanley and P. G. Steffes, "A high-sensitivity laboratory system for measuring the microwave properties of gases under simulated conditions for planetary atmospheres," Radio Sci.,VOL. 42, RS6010, doi:10.1029/2007RS003693, 2007.

D. R. DeBoer and P. G. Steffes, "The Georgia Tech High Sensitivity Microwave Measurement System, " Astrophysics and Space Science, vol.236, pp.111-124, February 1996.

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