DOI: 10.1063/1.4757207. Calculation of Line Widths in H2O-N2 Collisions

Calculation of Line Widths in H2O-N2 Collisions

10.1063/1.4757207

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Anderson’s general theory of collision line broadening has been applied to H2O-N2 encounters. The only attractive force was assumed to be that between the H2O dipole, μ = 1.87×10−18 esu, and the N2 quadrupole, qN2, an adjustable parameter. A second adjustable parameter, bm, the distance of closest approach, includes the effects of all other forces. The IBM 704 was used in the calculation. Effects of varying the parameters were noted for a number of lines, and in the final calculation, which yielded the widths of all significant type B transitions up to J″ = 13, parameters qN2 = 2.62×10−26 esu and bm = 3.2 A which give an exact fit of the observed width of the microwave line 6−5−5−1, were adopted. The temperature dependence of the line width over the range 220–2400 °K, and the effects of vibration-rotation interactions were also calculated. At 300 °K widths vary from 0.11115 cm−1 atmos for 11−1−1 to 0.03200 cm−1 atmos−1 for 14−13−13−13, there being a general decrease in width with increasing J, and at a given J, decreasing width with increasing τ.

Bibliography

Benedict, W. S., & Kaplan, L. D. (1959). Calculation of Line Widths in H2O-N2 Collisions. The Journal of Chemical Physics, 30(2), 388â399.

Authors 2

W. S. Benedict (first)
L. D. Kaplan (additional)

References 19 Referenced 217

10.1175/1520-0469(1952)009<0001:OTPDOR>2.0.CO;2 / J. Meteorol. (1952)
10.1139/p56-091 / Can. J. Phys. (1956)
{'key': '2024020818140880700_r3'}
{'key': '2024020818140880700_r4', 'first-page': '300', 'volume': '70', 'year': '1945', 'journal-title': 'Phys. Rev.'} / Phys. Rev. (1945)
10.1103/PhysRev.71.806 / Phys. Rev. (1947)
{'key': '2024020818140880700_r6'}
{'key': '2024020818140880700_r7', 'first-page': '947', 'volume': '76', 'year': '1949', 'journal-title': 'Phys. Rev.'} / Phys. Rev. (1949)
{'key': '2024020818140880700_r8'}
10.1103/PhysRev.79.132 / Phys. Rev. (1950)
10.1063/1.1742955 / J. Chem. Phys. (1956)
{'key': '2024020818140880700_r11'}
{'key': '2024020818140880700_r12'}
10.1063/1.1723935 / J. Chem. Phys. (1944)
{'key': '2024020818140880700_r14'}
10.1139/p54-033 / Can. J. Phys. (1954)
{'key': '2024020818140880700_r16', 'first-page': '18', 'volume': '2', 'year': '1957', 'journal-title': 'Mem. Soc. Roy. Liège'} / Mem. Soc. Roy. Liège (1957)
10.1103/PhysRev.91.308 / Phys. Rev. (1953)
10.1139/p56-092 / Can. J. Phys. (1956)
10.1016/S0031-8914(58)95223-6 / Physica (1958)

Dates

Type	When
Created	11 years, 6 months ago (Feb. 27, 2014, 8:30 p.m.)
Deposited	1 year, 6 months ago (Feb. 8, 2024, 1:53 p.m.)
Indexed	1 month, 3 weeks ago (July 2, 2025, 12:56 p.m.)
Issued	66 years, 6 months ago (Feb. 1, 1959)
Published	66 years, 6 months ago (Feb. 1, 1959)
Published Print	66 years, 6 months ago (Feb. 1, 1959)

Funders 0

None

BibTeX

@article{Benedict_1959, title={Calculation of Line Widths in H2O-N2 Collisions}, volume={30}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.4757207}, DOI={10.1063/1.4757207}, number={2}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Benedict, W. S. and Kaplan, L. D.}, year={1959}, month=feb, pages={388–399} }

JSON

{
  "indexed": {
    "date-parts": [
      [
        2025,
        7,
        2
      ]
    ],
    "date-time": "2025-07-02T16:56:04Z",
    "timestamp": 1751475364384
  },
  "reference-count": 19,
  "publisher": "AIP Publishing",
  "issue": "2",
  "content-domain": {
    "domain": [
      "pubs.aip.org"
    ],
    "crossmark-restriction": true
  },
  "published-print": {
    "date-parts": [
      [
        1959,
        2,
        1
      ]
    ]
  },
  "abstract": "<jats:p>Anderson\u2019s general theory of collision line broadening has been applied to H2O-N2 encounters. The only attractive force was assumed to be that between the H2O dipole, \u03bc\u2009=\u20091.87\u00d710\u221218\u2009esu, and the N2 quadrupole, qN2, an adjustable parameter. A second adjustable parameter, bm, the distance of closest approach, includes the effects of all other forces. The IBM 704 was used in the calculation. Effects of varying the parameters were noted for a number of lines, and in the final calculation, which yielded the widths of all significant type B transitions up to J\u2033\u2009=\u200913, parameters qN2\u2009=\u20092.62\u00d710\u221226\u2009esu and bm\u2009=\u20093.2 A which give an exact fit of the observed width of the microwave line 6\u22125\u22125\u22121, were adopted. The temperature dependence of the line width over the range 220\u20132400\u2009\u00b0K, and the effects of vibration-rotation interactions were also calculated. At 300\u2009\u00b0K widths vary from 0.11115\u2009cm\u22121\u2009atmos for 11\u22121\u22121 to 0.03200\u2009cm\u22121\u2009atmos\u22121 for 14\u221213\u221213\u221213, there being a general decrease in width with increasing J, and at a given J, decreasing width with increasing \u03c4.</jats:p>",
  "DOI": "10.1063/1.4757207",
  "type": "journal-article",
  "created": {
    "date-parts": [
      [
        2014,
        2,
        28
      ]
    ],
    "date-time": "2014-02-28T01:30:59Z",
    "timestamp": 1393551059000
  },
  "page": "388-399",
  "update-policy": "http://dx.doi.org/10.1063/aip-crossmark-policy-page",
  "source": "Crossref",
  "is-referenced-by-count": 217,
  "title": "Calculation of Line Widths in H2O-N2 Collisions",
  "prefix": "10.1063",
  "volume": "30",
  "author": [
    {
      "given": "W. S.",
      "family": "Benedict",
      "sequence": "first",
      "affiliation": [
        {
          "name": "Laboratory of Astrophysics and Physical Meteorology, The Johns Hopkins University, Baltimore, Maryland"
        }
      ]
    },
    {
      "given": "L. D.",
      "family": "Kaplan",
      "sequence": "additional",
      "affiliation": [
        {
          "name": "Department of Meteorology, Massachusetts Institute of Technology, Cambridge, Massachusetts"
        }
      ]
    }
  ],
  "member": "317",
  "reference": [
    {
      "key": "2024020818140880700_r1",
      "doi-asserted-by": "crossref",
      "first-page": "1",
      "DOI": "10.1175/1520-0469(1952)009<0001:OTPDOR>2.0.CO;2",
      "volume": "9",
      "year": "1952",
      "journal-title": "J. Meteorol."
    },
    {
      "key": "2024020818140880700_r2",
      "doi-asserted-by": "crossref",
      "first-page": "830",
      "DOI": "10.1139/p56-091",
      "volume": "34",
      "year": "1956",
      "journal-title": "Can. J. Phys."
    },
    {
      "key": "2024020818140880700_r3"
    },
    {
      "key": "2024020818140880700_r4",
      "first-page": "300",
      "volume": "70",
      "year": "1945",
      "journal-title": "Phys. Rev."
    },
    {
      "key": "2024020818140880700_r5",
      "doi-asserted-by": "crossref",
      "first-page": "806",
      "DOI": "10.1103/PhysRev.71.806",
      "volume": "71",
      "year": "1947",
      "journal-title": "Phys. Rev."
    },
    {
      "key": "2024020818140880700_r6"
    },
    {
      "key": "2024020818140880700_r7",
      "first-page": "947",
      "volume": "76",
      "year": "1949",
      "journal-title": "Phys. Rev."
    },
    {
      "key": "2024020818140880700_r8"
    },
    {
      "key": "2024020818140880700_r9",
      "doi-asserted-by": "crossref",
      "first-page": "132",
      "DOI": "10.1103/PhysRev.79.132",
      "volume": "79",
      "year": "1950",
      "journal-title": "Phys. Rev."
    },
    {
      "key": "2024020818140880700_r10",
      "doi-asserted-by": "crossref",
      "first-page": "510",
      "DOI": "10.1063/1.1742955",
      "volume": "25",
      "year": "1956",
      "journal-title": "J. Chem. Phys."
    },
    {
      "key": "2024020818140880700_r11"
    },
    {
      "key": "2024020818140880700_r12"
    },
    {
      "key": "2024020818140880700_r13",
      "doi-asserted-by": "crossref",
      "first-page": "210",
      "DOI": "10.1063/1.1723935",
      "volume": "12",
      "year": "1944",
      "journal-title": "J. Chem. Phys."
    },
    {
      "key": "2024020818140880700_r14"
    },
    {
      "key": "2024020818140880700_r15",
      "doi-asserted-by": "crossref",
      "first-page": "339",
      "DOI": "10.1139/p54-033",
      "volume": "32",
      "year": "1954",
      "journal-title": "Can. J. Phys."
    },
    {
      "key": "2024020818140880700_r16",
      "first-page": "18",
      "volume": "2",
      "year": "1957",
      "journal-title": "Mem. Soc. Roy. Li\u00e8ge"
    },
    {
      "key": "2024020818140880700_r17",
      "doi-asserted-by": "crossref",
      "first-page": "308",
      "DOI": "10.1103/PhysRev.91.308",
      "volume": "91",
      "year": "1953",
      "journal-title": "Phys. Rev."
    },
    {
      "key": "2024020818140880700_r18",
      "doi-asserted-by": "crossref",
      "first-page": "850",
      "DOI": "10.1139/p56-092",
      "volume": "34",
      "year": "1956",
      "journal-title": "Can. J. Phys."
    },
    {
      "key": "2024020818140880700_r19",
      "doi-asserted-by": "crossref",
      "first-page": "347",
      "DOI": "10.1016/S0031-8914(58)95223-6",
      "volume": "24",
      "year": "1958",
      "journal-title": "Physica"
    }
  ],
  "container-title": "The Journal of Chemical Physics",
  "original-title": [],
  "language": "en",
  "link": [
    {
      "URL": "https://pubs.aip.org/aip/jcp/article-pdf/30/2/388/18815480/388_1_online.pdf",
      "content-type": "application/pdf",
      "content-version": "vor",
      "intended-application": "syndication"
    },
    {
      "URL": "https://pubs.aip.org/aip/jcp/article-pdf/30/2/388/18815480/388_1_online.pdf",
      "content-type": "unspecified",
      "content-version": "vor",
      "intended-application": "similarity-checking"
    }
  ],
  "deposited": {
    "date-parts": [
      [
        2024,
        2,
        8
      ]
    ],
    "date-time": "2024-02-08T18:53:09Z",
    "timestamp": 1707418389000
  },
  "score": 1,
  "resource": {
    "primary": {
      "URL": "https://pubs.aip.org/jcp/article/30/2/388/76056/Calculation-of-Line-Widths-in-H2O-N2-Collisions"
    }
  },
  "subtitle": [],
  "short-title": [],
  "issued": {
    "date-parts": [
      [
        1959,
        2,
        1
      ]
    ]
  },
  "references-count": 19,
  "journal-issue": {
    "issue": "2",
    "published-print": {
      "date-parts": [
        [
          1959,
          2,
          1
        ]
      ]
    }
  },
  "URL": "http://dx.doi.org/10.1063/1.4757207",
  "relation": {},
  "ISSN": [
    "0021-9606",
    "1089-7690"
  ],
  "subject": [],
  "published-other": {
    "date-parts": [
      [
        1959,
        2
      ]
    ]
  },
  "published": {
    "date-parts": [
      [
        1959,
        2,
        1
      ]
    ]
  }
}