Review of Feminists and Sciences: Critiques and Changing Perspectives in India Volume 1 & 2 (Sage Publications, 2015-2017)

Book Review of Feminists and Sciences: Critiques and Changing Perspectives in India Volume 1 & 2, edited by Sumi Krishna and Gita Chadh

REASSIGNMENT OF Br2Br_{2} ULTRAVIOLET LASER TRANSITION

Author Institution: Department of Chemistry, Vanderbilt UniversityThe $Br_{2}$ laser transition near 2900 {\AA} has been re-examined using a single isotope of bromine. The vibrational analysis contradicts previous assignments, according to which the lower state was designated $B (O^{+}u 3\pi)$. The new analysis indicates this transition is very likely 1432, $2g^{3}\Pi \rightarrow 2431, 2u^{3} \Pi$, the same as the preferred designation for the $I_{2}$ 3400 {\AA} laser transition. The prominent bands in the laser spectrum (2913-2926 {\AA}) are 0-10, 2-13, 1-12, 0-11, and 2-14

ANALYSIS OF THE UV LASER TRANSITION IN Br2Br_{2}

Author Institution: Department of ChemistryThe previously reported vibrational analysis of the $d^{\prime} \rightarrow A^{\prime}$ transition (2900 {\AA}) in $Br_{2}$ is extended to include additional bands obtained by photographing the emission from isotopically separated $^{79}Br_{2}$ and $^{81} Br_{2}$. From measurements of the partially resolved rotational structure in several prominent bands, employed together with Franck-Condon and centrifugal distortion calculations, we obtain a rotational analysis. The results indicate that $R_{e}^{\prime\prime} = 2.69$ \AA, which is comparable to the known values for the B(0^{+} u \; ^{3}\Pi) and $A(1u^{3}\Pi)$ states. The analysis supports the $2g ^{3}\Pi \rightarrow 2u ^{3}\Pi$ designation for this transition

THE B→XB \to X AND D→D\to X SYSTEMS OF XeCl

Author Institution: Department of ChemistryThe $B \rightarrow X$ (3050 {\AA}) and $D \rightarrow$X(2350 {\AA}) band systems of XeCl are photographed using sources containing both natural $Cl_{2}$ and isotopically pure $^{35}C1_{2}$. The spectra permit us to refine the existing vibrational analysis of the $B \rightarrow X$ laser transition and obtain a complementary analysis of the $D \rightarrow X$ transition. The results show that the D state has smaller $R_{e}$ larger $\omega_{e}$, and larger $D_{e}$ than does the B state, as is found also in XeF. Higher $v^{\prime\prime}$ levels are observed in the $D\rightarrow X$ spectrum, permitting us to obtain a more precise estimate of $D_{e}^{\prime\prime}$ than was obtained previously from the $B\rightarrow X$ system alone

TWO- AND THREE-PHOTON ABSORPTION STUDIES OF THE O2O_{2} MOLECULE

Author Institution: Department of Chemistry, Yale UniversityResonance enhanced multiphoton ionization studies in the 275-330 nm region reveal a large number of 2- and 3-photon transitions to previously unknown states. We have analyzed, in detail, four vibrational components of a rotationally resolved electronic transition at 8.2 eV. The vibrational frequency of $1870 cm^{-1}$ and a rotational constant of $1.68 cm^{-1}$ suggest that the upper state is the lowest Rydberg state (3s$\sigma$) of $O_{2}$. The rotational structure is consistent with an electronic designation of $^{3}\Pi_{0_{g}^{-}}$ for this state

SPECTROSCOPY WITH A TESLA COIL

$^{1}$A.K. Hui, M. R. McKeever, and J. Tellinghuisen, J. Quant. Spectrosc. Radiat. Transfer (in press).Author Institution:For several years we have been using a Telsa discharge to produce emission from molecular and excimer systems of interest in laser development. This source has proved very useful because of its low cost, low discharge temperature. The light emitted from a Telsa discharge consists of roughly $10^{3}$ pulses/s, each having a width of from 0.5 to 5 $\mu$s, depending on the design of the coil. Total photon production for the rare gas halides is typified by the value of $2 \times 10^{12}$ quanta/pulse (average radiant power 1 mW) measured for the $B \rightarrow X$ system of XeCL. Rotational intensity $measurements^{1}$ on the 0-0 band of the O-H $A \rightarrow X$ system yield discharge temperatures only 10-30 K above the measured wall temperatures for T = 300-800 K and P = 100-700 torr