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Author: edwin heilweil

Displaying records 21 to 30 of 84 records.
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21. Process Analytical Technology (PAT): Effects of Instrumental and Compositional Variables on Terahertz Spectral Data Quality to Characterize Pharmaceutical Materials and Tablets
Published: 1/1/2007
Authors: H Wu, Edwin J Heilweil, A S Hussain, M A Khan
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101780

22. Process Analytical Technology (PAT): Quantification Approaches in Terahertz Spectroscopy for Pharmaceutical Application
Published: 1/1/2007
Authors: H Wu, Edwin J Heilweil, A S Hussain
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101795

23. Ultrafast Chelation Dynamics of a Manganese Tricarbonyl Derivative in Solid Polyacrylonitrile
Published: 1/1/2007
Authors: Tung T. To, Edwin J Heilweil
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=101777

24. Time-Resolved Infrared Absorption Study of Cyclopentadienyl Manganese Tricarbonyl Derivatives With Pendant Sulfides in Acetonitrile
Published: 7/18/2006
Authors: Tung T. To, Edwin J Heilweil, T J Burkey
Abstract: The chelation dynamics of [5-C5H4C(O)R]Mn(CO)3 complexes 1 (R = CH2(SCH3)3), 2 (R = CH(SCH3)2), and 3 (R = C(SCH3)3) in room temperature acetonitrile solution have been investigated on the picosecond timescale by UV-pump IR-probe transient absorption ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841001

25. Terahertz Spectroscopy of Solid Serine and Cysteine
Published: 11/10/2005
Authors: T M Korter, M BC Campbell, M C Beard, Edwin J Heilweil
Abstract: Terahertz (THz) absorption spectra of the amino acids L-serine and L-cysteine in teh solid phase at 77K and 298 K are reported and compared to vibrational spectral results from Density Functional Theory for these species.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841776

26. Measurement Process Prospects using THz Spectroscopy for Pharmaceutical Applications
Published: 1/1/2005
Authors: M A Khan, Edwin J Heilweil, A S Hussain, H Wu
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104569

27. Ultrafast Transient THz Spectroscopy of Azobenzene
Published: 1/1/2005
Authors: Okan Esenturk, Edwin J Heilweil
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104459

28. Using Terahertz Spectroscopy to Quantify Pharmaceutical Tablet Composition
Published: 1/1/2005
Authors: M A Khan, H Wu, Edwin J Heilweil, A S Hussain
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104570

29. Comparative OHD-RIKES and THz-TDS Probes of Ultrafast Structural Dynamics in Molecular Liquids
Published: 10/1/2004
Authors: M C Beard, W T Lotshaw, T M Korter, Edwin J Heilweil, D McMorrow
Abstract: We compare terahertz time-domain (THz-TDS) and optical heterodyne detected Raman-induced Kerr effect (OHD-RIKES) spectroscopic techniques as probes of molecular and vibrational dynamics in the frequency range 0.1 THz to 6 THz (3 cm-1 to 200 cm-1). T ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841814

30. Femtosecond Infrared Coherent Excitation of Liquid Phase Vibrational Population Distributions (v [greater than] 5)
Published: 7/1/2004
Authors: T Witte, J S Yeston, Edwin J Heilweil, K L Kompa, M Motzkus
Abstract: Irradiation of a hexane solution of W(CO)6 with femtosecond mid-IR pulses, resonant with the transition energies for the first seven steps in the anharmonic potential of the T1u CO-stretch, has transferred vibrational population up to at least v = 6. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841774



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