marchetti_2006

S. Marchetti and R. Simili, Infrared Phys. Technol. 47, 263 (2006)

Source record · Catalogue · Review register

DOI: 10.1016/j.infrared.2004.12.005

Source kind: measurement

Recorded technique: Differential Fabry-Perot interferometry at 10.57 um: a pulsed, single-mode, tunable RF-excited CO2 laser (linewidth < 13 MHz) probes two equal 222.4 cm resonators, one containing a 208.9 cm gas cell with ZnSe Brewster windows; the fringe shift is counted while the pressure changes and then measured differentially between two extreme pressures at the same temperature. Table temperature to 0.1 degrees C; air drift of the reference resonator corrected (0.35 FD per degree C) (pp. 263-265).

Materials in structured entries: CO2, He, N2, O2

Dataset quantities: refractivity, refractivity_per_density

Contents: 15 datasets; 0 formulas.

Curation notes

Values are pressure coefficients alpha_P with n = 1 + alpha_P P, ‘measured at 23 degrees C’ (Table 1, captioned ‘@ 296 °C’, i.e. 296 K), in 1e-4 per atm; the uncertainty in the last digits is printed under each value. The abstract claims ‘alpha_P has been measured with 5e-3 accuracy’ (true for CO2, N2, O2; helium’s 0.326(12) is 3.7 %). The level of the uncertainties is not stated. Here each alpha_P is the refractivity at 1 atm and 296 K, with the ideal-gas density (the paper converts with the perfect-gas relation, Eq. 3, and uses no virial correction).

Table 2’s alpha_rho = (n - 1)/rho in cm^3/mol (not the Lorentz-Lorenz molar refractivity, which is about 2/3 of it) is Table 1 times R T for this work, and compares Simmons (1978; 10.59 and 0.633 um), Achtermann et al. (1991; 0.633 um) and theory: Edlen (1966) and Old, Gentili and Peck (1971) for CO2, ‘as reported in’ Ciddor (2002), and Ciddor (1996) for air. The datasets store it as a refractivity per density with scale 1/N_A = 1.6605390671738466e-24 (cm^3 per molecule), at the state 1 atm, 296 K (ideal gas): the conversion is linear, so the state matters only through Lorentz-Lorenz. The authors think Simmons’s values ‘instrumentally overestimated’ (p. 266). Air is not a curated species and is skipped; the paper’s ‘synthetic air’ 0.19 O2 + 0.81 N2 agrees with its air value.

Wavelengths: 10.57 um (the laser line; the medium is immaterial at this precision), 10.59 and 0.633 um as printed.

Recorded bibliographic identity status: VALIDATED_WITH_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets

marchetti_2006/alpha_p_CO2

{
  "id": "alpha_p_CO2",
  "material": "CO2",
  "file": "CO2/marchetti_2006__alpha_p_CO2.csv",
  "table": "tbl_fcf07d146f15",
  "quantity": "refractivity",
  "scale": 0.0001,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "primary",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 1, alpha_P of CO2 at 10.57 um, 23 degrees C, as the refractivity at 1 atm.

marchetti_2006/alpha_p_N2

{
  "id": "alpha_p_N2",
  "material": "N2",
  "file": "N2/marchetti_2006__alpha_p_N2.csv",
  "table": "tbl_fcf07d146f15",
  "quantity": "refractivity",
  "scale": 0.0001,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "primary",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 1, alpha_P of N2 at 10.57 um, 23 degrees C, as the refractivity at 1 atm.

marchetti_2006/alpha_p_O2

{
  "id": "alpha_p_O2",
  "material": "O2",
  "file": "O2/marchetti_2006__alpha_p_O2.csv",
  "table": "tbl_fcf07d146f15",
  "quantity": "refractivity",
  "scale": 0.0001,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "primary",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 1, alpha_P of O2 at 10.57 um, 23 degrees C, as the refractivity at 1 atm.

marchetti_2006/alpha_p_He

{
  "id": "alpha_p_He",
  "material": "He",
  "file": "He/marchetti_2006__alpha_p_He.csv",
  "table": "tbl_fcf07d146f15",
  "quantity": "refractivity",
  "scale": 0.0001,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "primary",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 1, alpha_P of He at 10.57 um, 23 degrees C, as the refractivity at 1 atm.

marchetti_2006/alpha_rho_CO2

{
  "id": "alpha_rho_CO2",
  "material": "CO2",
  "file": "CO2/marchetti_2006__alpha_rho_CO2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "check",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 2, this work: Table 1 converted with R T (Eq. 3), not independent.

marchetti_2006/alpha_rho_N2

{
  "id": "alpha_rho_N2",
  "material": "N2",
  "file": "N2/marchetti_2006__alpha_rho_N2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "check",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 2, this work: Table 1 converted with R T (Eq. 3), not independent.

marchetti_2006/alpha_rho_O2

{
  "id": "alpha_rho_O2",
  "material": "O2",
  "file": "O2/marchetti_2006__alpha_rho_O2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "check",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 2, this work: Table 1 converted with R T (Eq. 3), not independent.

marchetti_2006/alpha_rho_He

{
  "id": "alpha_rho_He",
  "material": "He",
  "file": "He/marchetti_2006__alpha_rho_He.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "check",
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 2, this work: Table 1 converted with R T (Eq. 3), not independent.

marchetti_2006/simmons_1978_CO2

{
  "id": "simmons_1978_CO2",
  "material": "CO2",
  "file": "CO2/marchetti_2006__simmons_1978_CO2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "A. C. Simmons, Opt. Commun. 25, 211 (1978)"
  ],
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 2, note b: Simmons at 10.59 and 0.633 um. The 0.633 um N2 cell is printed 7.219 with (73) wrapped to the next line.

marchetti_2006/simmons_1978_N2

{
  "id": "simmons_1978_N2",
  "material": "N2",
  "file": "N2/marchetti_2006__simmons_1978_N2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "A. C. Simmons, Opt. Commun. 25, 211 (1978)"
  ],
  "uncertainty": {
    "column": true,
    "level": "not stated"
  }
}

Table 2, note b: Simmons at 10.59 and 0.633 um. The 0.633 um N2 cell is printed 7.219 with (73) wrapped to the next line.

marchetti_2006/achtermann_1991_CO2

{
  "id": "achtermann_1991_CO2",
  "material": "CO2",
  "file": "CO2/marchetti_2006__achtermann_1991_CO2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "H. J. Achtermann, G. Magnus and T. K. Bose, J. Chem. Phys. 94, 5669 (1991)"
  ]
}

Table 2, note c: Achtermann et al. at 0.633 um, as alpha_rho (no uncertainty printed).

marchetti_2006/achtermann_1991_N2

{
  "id": "achtermann_1991_N2",
  "material": "N2",
  "file": "N2/marchetti_2006__achtermann_1991_N2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "H. J. Achtermann, G. Magnus and T. K. Bose, J. Chem. Phys. 94, 5669 (1991)"
  ]
}

Table 2, note c: Achtermann et al. at 0.633 um, as alpha_rho (no uncertainty printed).

marchetti_2006/achtermann_1991_He

{
  "id": "achtermann_1991_He",
  "material": "He",
  "file": "He/marchetti_2006__achtermann_1991_He.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "H. J. Achtermann, G. Magnus and T. K. Bose, J. Chem. Phys. 94, 5669 (1991)"
  ]
}

Table 2, note c: Achtermann et al. at 0.633 um, as alpha_rho (no uncertainty printed).

marchetti_2006/edlen_theory_CO2

{
  "id": "edlen_theory_CO2",
  "material": "CO2",
  "file": "CO2/marchetti_2006__edlen_theory_CO2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "B. Edlen, Metrologia 2, 71 (1966), as reported in P. E. Ciddor, Appl. Optics 41, 2292 (2002)"
  ]
}

Table 2, note e: Edlen’s CO2 value ‘as reported in’ Ciddor (2002), from ultraviolet resonances only.

marchetti_2006/old_theory_CO2

{
  "id": "old_theory_CO2",
  "material": "CO2",
  "file": "CO2/marchetti_2006__old_theory_CO2.csv",
  "table": "tbl_a64b03e950d7",
  "quantity": "refractivity_per_density",
  "unit": "cm3",
  "scale": 1.6605390671738466e-24,
  "abscissa_unit": "um",
  "wavelength_medium": "vacuum",
  "state": {
    "pressure_atm": 1,
    "temperature_k": 296
  },
  "density": "ideal",
  "use": "reproduced",
  "reproduced_from": [
    "J. G. Old, K. L. Gentili and E. R. Peck, J. Opt. Soc. Am. 61, 89 (1971), as reported in P. E. Ciddor, Appl. Optics 41, 2292 (2002)"
  ]
}

Table 2, note f: Old et al.’s CO2 value, including the infrared resonance, ‘as reported in’ Ciddor (2002).

Formulas

No formulas are recorded.

Corrections

No dataset errata are recorded in this source record.

Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the review register for the checks and decisions.