State-resolved two-photon laser induced fluorescence detection of BrO

Delmdahl, Ralph; Gericke, Karl‐Heinz

doi:10.1063/1.476785

Cited by 8 publications

(7 citation statements)

References 13 publications

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“…Such a method would eliminate, or minimize, the experimental uncertainty due to reaction 2. Delmdahl and Gericke recently reported the detection of BrO via two-photon LIF. Therefore, we made numerous attempts to detect BrO via two-photon LIF: these experiments were unsuccessful and are presented in the Appendix.…”

Section: Resultsmentioning

confidence: 99%

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Measurement of the Rate Coefficient for the Reaction of OH with BrO

et al. 2001

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We report the rate coefficient for the reaction OH + BrO f Products (1) at 298 K to be k 1 (298 K) ) (4.5 ( 1.8) × 10 -11 cm 3 molecule -1 s -1 . Reaction 1 was studied in an excess of BrO, generated in a flow tube, and measured via its UV-vis absorption. OH, produced by laser photolysis, was monitored by laserinduced fluorescence. Quoted uncertainties include estimated uncertainties in the BrO concentration and that due to the unavoidable concurrent reaction of OH with Br 2 . Our measured value of k 1 is compared with that previously reported by Bogan et al. 1

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Section: Resultsmentioning

confidence: 99%

“…Under pseudo first-order conditions in BrO, the reaction of Br 2 with OH can be minimized more effectively. Therefore, we attempted to monitor BrO via two photon LIF as reported recently …”

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confidence: 99%

Measurement of the Rate Coefficient for the Reaction of OH with BrO

et al. 2001

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“…ê ã Ò h l Ï ClO 3 ß¸/ ø . Baumgaertel [10] , Matsumi [11] Delmdahl [12] vq¢&bw/;øÉÞü Cl + O 3 Br + O 3 , 2ê;¥ ClO BrO dê ¢&bà. -; ClO ruÕ §d Ãß¹.…”

Section: ¹ §¥êKàþ §þ;mentioning

confidence: 99%

“…êa;¸!.Ð5 ¦ §¥ìÉh;, ÿ.Ð5 ClO, OClO, BrO 7 OBrO ¥xëàÞ §Þ;. ;qf~à [25] ¢&bà [10,12] wè ]à [26,27] +Í{àw/ [28] ;ø ClO BrO à, Qø¯6øÁÒ ClO, BrO ú. Õ § E § Þ [33 35] . Peterson [36 38]…”

Section: Clo ¹ Bro üü;mentioning

confidence: 99%

平流层中臭氧耗减化学研究进展

李¹,

周²,

王³

2001

Chin. Sci. Bull.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] and references therein), knowledge about other Group 16 monohalides is very poor. Among sulphur monohalides, only the lightest SF radical is mentioned in the Huber-Herzberg compendium [15], and even in this case the spectroscopic data reported are far from complete and the assignment of the only known excited state as A'II is not reliable.…”

Section: Introductionmentioning

confidence: 99%

Electronic states and transitions of the TeX (X = C1, Br, I) radicals

et al. 2002

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A b inirio multireference configuration interaction calculations including spin-orbit coupling have been carried out for the first time for valence electronic states of the TeX (X = CI, Br, I) radicals and compared with the results for the isovalent TeF and I 0 systems obtained earlier at a similar level of theoretical treatment. The calculated spectroscopic constants are in good agreement yith experimental data in the rare cases when the latter are available. It is shown that the X -r I ( s '~~n *~) ground state bonding becomes consistently weaker down the TeX group (calc. D, = 25480cm-I for TeF, 12 l00cm-I for Tel) due to the more covalent character of bonding in the heavier radicals. The first excited state, A 4C-(TC* + s*), is calculated to be bound in all systems. It is split into R 1 /2 and 3/2 comppnents, with regular ordering in the Franck-Condon region, opposite to that of the ground X -Il state. p r larger internuclear distances, the A, 4CI/2 state undergoes an avoided crossing with X2-IIl,2, which causes a shoulder in the X2 potential curve and also leads to a crossing between the A, and A2 curves and large distinctions in their vibrational frequencies. The X* + CJ* B'C-, C'A, and 1 'C+ states are calculated to lie next in energy. They are all bound in the lightest of the TeX radicals, TeF, but successiv7ly lo,se their bonding character down the group. In contrast to oxygen monohalides, the 2 -Il( o -x~x '~) state has a repulsive potential curve. Electric dipole transition moments and radiative lifetimes have also been calculated for the low lying bound states in all systems. Most of them are found to be quite weak. The A,,? + XI,' spectra are dominated by parallel contributions, with the A? + X I being the strongest one. The T values for this transition are quite similar and lie in the 17-30 ps range. Radiative lifetime values for the B + XI,? transitions demonstrate very irregular behaviour for various, TeX radicals, due to strong admixture of A4CS character to the XI,? states near the B-C-potential minimum. The A,,' C;j2,3,2 and B-C;,' states of TeX (X = C1, Br, I) still await their experimental observation. 4

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State-resolved two-photon laser induced fluorescence detection of BrO

Cited by 8 publications

References 13 publications

Measurement of the Rate Coefficient for the Reaction of OH with BrO

Measurement of the Rate Coefficient for the Reaction of OH with BrO

平流层中臭氧耗减化学研究进展

Electronic states and transitions of the TeX (X = C1, Br, I) radicals

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