palastro_2016 ============= J\. P\. Palastro, J\. Penano, L\. A\. Johnson, B\. Hafizi, J\. K\. Wahlstrand and H\. M\. Milchberg, "Two\-photon vibrational excitation of air by long\-wave infrared laser pulses", Phys\. Rev\. A 94, 023816 \(2016\) `Source record `__ · :doc:`Catalogue ` · :doc:`Review register ` DOI: `10\.1103/PhysRevA\.94\.023816 `__ **Source kind:** theory **Recorded technique:** Simulations and analytic theory of long\-wave infrared \(8\.4 or 12\.6 um, near half the vibrational frequency of N2 or O2\) ultrashort\-pulse propagation in air with electronic, rotational and vibrational \(two\-photon resonant\) responses from density\-matrix theory \(secs\. II\-IV\)\. **Materials in structured entries:** N2, O2 **Dataset quantities:** nonlinear\_index, polarizability\_anisotropy **Contents:** 4 datasets; 0 formulas. Curation notes -------------- Journal pages 023816\-1 to \-7 = PDF pages 1\-7; the library copy is marked 'published 5 August 2016; corrected 28 December 2017' \(the corrected version\)\. Identity checked against the first page\. Air \(0\.8 N2 \+ 0\.2 O2\) is the medium; the N2 and O2 parameters of Table I are taken\. DEFINITIONS \(SI; p\. 2\)\: P\_e = eps0 chi\_e E, 'chi\_e = 4 c eps0 n2 E^2 / 3' \(Eq\. \(1\)\), E the real transverse field \(so with E = E\_hat sin\(omega t\) the cycle\-averaged index change is n2 \(c eps0 E\_hat^2 / 2\) = n2 I\: n2 is the self coefficient\); rotational Eq\. \(2\), vibrational Eq\. \(3\)\: \(d^2/dt^2 \+ Omega\_v^2\) chi\_v = \(4 pi^2 eps0 eta / mu\)\(d alpha/dQ\)^2 E^2 \(eta the number density, mu the reduced mass, d alpha/dQ the isotropic polarizability derivative\)\. Refractive limit, Eq\. \(11\)\: \ = gamma E\_hat^2 / 2 Omega\_v^2 \+ \.\.\. TABLE I \(p\. 2; CSV and image checked; tools/extract/palastro\_2016\.py\)\: N2, O2\: fraction 0\.8, 0\.2; n2 \(m2/W\) 7\.3e\-24, 9\.3e\-24 '\[6,16\]'; Omega\_v \(s^\-1\) 4\.5e14, 3\.0e14 '\[12\]'; I\_M \(J s2\) 1\.46e\-46, 1\.9e\-46 '\[4\]'; Delta a \(m3\) 6\.7e\-31, 10\.2e\-31 '\[6\]'; mu \(kg\) 1\.2e\-26, 1\.3e\-26; d a/dQ \(m2\) 1\.75e\-20, 1\.46e\-20 '\[20\]'\. Only n2 and Delta a are extracted \(no quantity for the others\)\. The n2 are 'adjusted in Table I to only include the electronic contribution n2 \-\> n2 \- \(3 pi^2 eta / c Omega\_v^2 mu\)\(d alpha/dQ\)^2' from 'the n2 values measured in Refs\. \[7,17\], which include both the electronic and the vibrational contributions' \(p\. 3\) = wahlstrand\_2012 and zahedpour\_2015\. REFERENCE NUMBERS\: Table I's '\[6,16\]' and '\[6\]' do not match that text\: \[6\] is Palastro, Antonsen and Pearson 2011 \(palastro\_2011, which gives no Delta alpha\) and \[16\] Mitrofanov et al\. 2015; the values \(Delta a 6\.7 and 10\.2 x 1e\-31 m3 = wahlstrand\_2012's 6\.7, 10\.2 x 1e\-25 cm3\) show that \[7\] and \[17\] are meant \(an off\-by\-one after the correction; \[12\] for Omega\_v, = wahlstrand\_2015 on H2 and D2, is likely \[13\] Demtroder, and \[4\] for I\_M is Lin et al\.\)\. reproduced\_from names the sources of the values\. The reference state of n2 is not stated \(that of the sources, 1 atm\)\. **Recorded bibliographic identity status:** VALIDATED. This concerns identification of the source; it does not establish the scientific correctness of its contents. Datasets -------- palastro\_2016/n2\_N2 ~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "n2_N2", "material": "N2", "file": "N2/palastro_2016__n2_N2.csv", "table": "tbl_8f0115c294cd", "quantity": "nonlinear_index", "unit": "m2/W", "scale": 1e-24, "abscissa_unit": "nm", "state": { "pressure_pa": 101325.0, "temperature_k": 293.15 }, "use": "reproduced", "reproduced_from": [ "wahlstrand_2012", "zahedpour_2015" ], "parameters": { "part": "electronic", "coefficient": "self" } } Table I, n2 = 7\.3e\-24 m2/W\: the measured n2 \(wahlstrand\_2012 7\.4, zahedpour\_2015 7\.9 x 1e\-20 cm2/W at 800 nm\) with the adiabatic vibrational part subtracted \(p\. 3\)\: reproduced and rescaled\. Recorded at the sources' 800 nm and 1 atm \(293\.15 K assumed\); the paper uses it frequency\-independently at 8\.4\-12\.6 um\. palastro\_2016/n2\_O2 ~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "n2_O2", "material": "O2", "file": "O2/palastro_2016__n2_O2.csv", "table": "tbl_8f0115c294cd", "quantity": "nonlinear_index", "unit": "m2/W", "scale": 1e-24, "abscissa_unit": "nm", "state": { "pressure_pa": 101325.0, "temperature_k": 293.15 }, "use": "reproduced", "reproduced_from": [ "wahlstrand_2012", "zahedpour_2015" ], "parameters": { "part": "electronic", "coefficient": "self" } } Table I, n2 = 9\.3e\-24 m2/W\: as n2\_N2 \(sources 9\.5 and 8\.1 x 1e\-20 cm2/W at 800 nm\), vibrational part subtracted\. palastro\_2016/dalpha\_N2 ~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "dalpha_N2", "material": "N2", "file": "N2/palastro_2016__dalpha_N2.csv", "table": "tbl_8f0115c294cd", "quantity": "polarizability_anisotropy", "unit": "cm3", "scale": 1e-25, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "wahlstrand_2012" ] } Table I, Delta a = 6\.7 x 10^\-31 m3 \(= 6\.7 x 1e\-25 cm3; scale set so\), wahlstrand\_2012's value \(the printed reference \[6\] is off by one, source notes\)\. palastro\_2016/dalpha\_O2 ~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "dalpha_O2", "material": "O2", "file": "O2/palastro_2016__dalpha_O2.csv", "table": "tbl_8f0115c294cd", "quantity": "polarizability_anisotropy", "unit": "cm3", "scale": 1e-25, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "wahlstrand_2012" ] } Table I, Delta a = 10\.2 x 10^\-31 m3 \(= 10\.2 x 1e\-25 cm3\), wahlstrand\_2012's value\. 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 :doc:`review register ` for the checks and decisions.