ライフサイエンスコーパス: photoionization

1 tra reflect parent radical cations formed by photoionization.

2 ng a high-power femtosecond-pulsed laser for photoionization.

3 mass spectrometer using atmospheric pressure photoionization.

4 A new method, photoionization aerosol mass spectrometry (PIAMS), is de

5 We used vacuum-UV photoionization aerosol mass spectrometry and X-ray phot

6 a hitherto undisclosed pathway that involves photoionization and deprotonation of radical cation, fol

7 OM form Trp radical cation (Trp(*+)) via Trp photoionization and direct oxidation, respectively.

8 The photoionization and dissociative photoionization of glyc

9 aphthols QMP 6-8 to S(1) in CH(3)CN leads to photoionization and formation of naphthoxyl radicals.

10 uch an ionosphere could be produced by solar photoionization and jovian magnetospheric particle impac

11 the order of 4 years is suggested, based on photoionization and magnetospheric sweeping.

12 mated the chemical composition by using both photoionization and shock considerations.

13 ature using tunable vacuum ultraviolet (VUV) photoionization and time-resolved mass spectrometry.

14 effects as observed in atmospheric pressure photoionization (APPI) and laser ionization (APLI) with

15 trospray ionization and atmospheric pressure photoionization (APPI) as an interface of high-performan

16 ay ionization (ESI) and atmospheric pressure photoionization (APPI) coupled to high resolution Orbitr

17 Here, we present atmospheric pressure photoionization (APPI) Fourier transform ion cyclotron r

18 ubsequently analyzed by atmospheric pressure photoionization (APPI) Fourier transform ion cyclotron r

19 RT source is similar to atmospheric pressure photoionization (APPI) in that it can produce molecular

20 to lamps in commercial atmospheric pressure photoionization (APPI) ion sources were compared.

21 r (1)D detection, while atmospheric pressure photoionization (APPI) MS and ESI-MS were used for detec

22 A positive ion atmospheric pressure photoionization (APPI) petroleum spectrum yields more th

23 stem interfaced with an atmospheric pressure photoionization (APPI) source and a tandem mass spectrom

24 s were ionized using an atmospheric pressure photoionization (APPI) source equipped with a 10 eV kryp

25 e the performance of an atmospheric pressure photoionization (APPI) source for sampling liquid flows.

26 ions formed within the atmospheric pressure photoionization (APPI) source, were detected by in-line

27 ometry equipped with an atmospheric pressure photoionization (APPI) source.

28 We have coupled atmospheric pressure photoionization (APPI) to a home-built 9.4-T Fourier tra

29 Atmospheric pressure photoionization (APPI) was evaluated for the analysis of

30 mpared to ESI(+)/(-) or atmospheric pressure photoionization (APPI)(+).

31 of analyzing lipids by atmospheric pressure photoionization (APPI), atmospheric pressure chemical io

32 hromatography (LC)-APCI/atmospheric pressure photoionization (APPI)-HRTOF-MS for a wider range of fla

33 ved in both cases using atmospheric pressure photoionization (APPI).

34 1-c-C5H7OO) and propargylperoxy (CH2=C=CHOO) photoionization are presented as examples.

35 Photoionization at 400 and 267 nm yields the highest mol

36 our ability to generate and control, through photoionization, attosecond electron beams carrying OAM.

37 A likely explanation for these ions is photoionization by solar ultraviolet radiation of neutra

38 Upon photoionization by tunable vacuum ultraviolet synchrotro

39 s are involved in DCPI: atmospheric pressure photoionization, capable of ionizing polar and nonpolar

40 chemical ionization and atmospheric pressure photoionization conditions.

41 massive shells than Betelgeuse, because the photoionization-confined shell traps up to 35 per cent o

42 part of the wind and forms an almost static, photoionization-confined shell.

43 Vacuum ultraviolet photoionization coupled to secondary neutral mass spectr

44 plets are directed into the heated capillary photoionization (CPI) device, where the droplets are vap

45 We present a capillary photoionization (CPI) method for mass spectrometric (MS)

46 Inner-shell photoionization creates positive charge, which is initia

47 etermined either with the help of calculated photoionization cross sections and inelastic mean free p

48 termined from (i) the difference in their 4f photoionization cross sections, (ii) the accumulation of

49 Desorption atmospheric pressure photoionization (DAPPI) allows surface analysis in the o

50 the basis of desorption atmospheric pressure photoionization (DAPPI) coupled to Fourier transform ion

51 try method, solvent jet desorption capillary photoionization (DCPI), is described.

52 chemical tag, which selectively undergoes a photoionization/desorption process upon laser irradiatio

53 f a microhelium dielectric barrier discharge photoionization detector (muHDBD-PID) on chip with dimen

54 Detection is provided by a photoionization detector operated at a pressure of 0.3 p

55 for aromatic compounds than the traditional photoionization detector.

56 Photoionization efficiency (PIE) curves for C(3) molecul

57 ranck-Condon (FC) spectral simulation of the photoionization efficiency (PIE) curves.

58 The photoionization efficiency curve for CH(3)OO has been me

59 er content, and nebulizer temperature on the photoionization efficiency of both clozapine and lonafar

60 as well as the nebulizer temperatures on the photoionization efficiency of CsA in the positive ion mo

61 Photoionization efficiency scans (photon scans) can be r

62 Analysis of photoionization efficiency versus VUV photon wavelength

63 ource systems including atmospheric pressure photoionization, electrospray ionization, and inductivel

64 ther demonstrate that, by changing laser and photoionization energies, variations in molecular stabil

65 ed as a function of reaction time, mass, and photoionization energy using multiplexed photoionization

66 photoexfoliation of monolayer MoS2 and water photoionization-enhanced light absorption.

67 Electrospray- and atmospheric pressure photoionization (ESI, APPI) ultrahigh resolution mass sp

68 nal geometry field-free atmospheric pressure photoionization (FF-APPI) source was evaluated against b

69 ation of an online FAIMS-FTMS coupling after photoionization for the analysis of crude oils is shown.

70 (e.g., electrospray or atmospheric pressure photoionization) for characterization of natural organic

71 Here, we used atmospheric pressure photoionization Fourier transform ion cyclotron resonanc

72 ings are consistent with standard models for photoionization heating by the ultraviolet radiation bac

73 e liquid chromatography-atmospheric pressure photoionization-high resolution mass spectrometry (UPLC-

74 reakdown products, with atmospheric pressure photoionization in negative ionization mode providing th

75 trospray ionization and atmospheric pressure photoionization, in both positive-ion and negative-ion m

76 As in atmospheric pressure photoionization, ionization in CPI occurs either by prot

77 on process induced by bromine 3d inner-shell photoionization is used to identify the cis and trans st

78 The laser ablation atmospheric pressure photoionization (LAAPPI) and LDTD-APPI mass spectra of s

79 ntroduce laser ablation atmospheric pressure photoionization (LAAPPI), a novel atmospheric pressure i

80 ser fluence and delay between desorption and photoionization laser pulses was observed for a small mo

81 Here, we report direct photoionization mass spectrometric detection of formalde

82 hromatography (CEC) and atmospheric pressure photoionization mass spectrometry (APPI-MS) provides a u

83 rude oil by GC coupled to vacuum ultraviolet photoionization mass spectrometry (GC/VUV-MS), with a ma

84 ng two complementary techniques: multiplexed photoionization mass spectrometry and cavity-enhanced br

85 mulations and molecular beam vacuum-UV (VUV) photoionization mass spectrometry experiments were perfo

86 es of two-, three-, and four-carbon enols by photoionization mass spectrometry of flames burning repr

87 Laser desorption photoionization mass spectrometry using 337-nm pulses fo

88 ctive sampling probe (microprobe) coupled to photoionization mass spectrometry using soft laser singl

89 and photoionization energy using multiplexed photoionization mass spectrometry with tunable synchrotr

90 ous spectroscopic tools, including vacuum UV photoionization mass spectrometry, absorption and action

91 combustion-like conditions with the help of photoionization mass spectrometry, we provide experiment

92 on and studied with vacuum ultraviolet (VUV) photoionization mass spectrometry.

93 APPI-MS) and desorption atmospheric pressure photoionization-mass spectrometry (DAPPI-MS).

94 or the experimental values, derived from the photoionization measurements, this discrepancy becomes e

95 VUV photoionization minimizes fragmentation of the molecular

96 The plasma electron temperature of a photoionization model cannot much exceed 20,000 K, but p

97 The predictions of the photoionization model may be useful in estimating ioniza

98 Hence, instead of employing a strict photoionization model, we are guided by the nebular diag

99 The photoionization models that have been used successfully

100 also leads, in part, to generation of 3, but photoionization of 1 is significantly less efficient tha

101 The photoionization of 1-alkenylperoxy radicals, which are p

102 The photoionization of alkylperoxy radicals has been investi

103 ion pair [R3N(*+).CO2(*-)] generated by the photoionization of amine 1a and the electron capture by

104 attributed to the evaporation and subsequent photoionization of atomic carbon from organic refractory

105 Resonant photoionization of atomic xenon was chosen as a case stu

106 The minimum onset energy of photoionization of cyclopropylamine was calculated to be

107 We have investigated the photoionization of gas-phase and ion-beam desorbed dopam

108 Photoionization of gas-phase dopamine is found to produc

109 The photoionization and dissociative photoionization of glycerol are studied experimentally a

110 direct comparison of ion yields obtained for photoionization of ion-beam-desorbed dopamine at 267 nm

111 Photoionization of ion-beam-desorbed dopamine exhibits a

112 e found that autoionization after soft x-ray photoionization of molecular oxygen follows a complex mu

113 Photoionization of nitrogen dioxide led to the formation

114 electric dipole approximation's validity for photoionization of Rydberg atoms, and it verifies the th

115 ons are typically generated by radiolysis or photoionization of solutes.

116 Ratios of <100 are consistent with photoionization of the absorbing gas by a hard ionizing

117 dication produced by Auger decay after X-ray photoionization of the carbon atom K shell.

118 electrostatic rearrangements resulting from photoionization of the chromophore and neutralization of

119 Furthermore, the dissociative photoionization of the glycerol dimer is investigated an

120 vent clusters containing analyte, that laser photoionization of the solvent precedes ionization of th

121 side atoms and molecules that are undergoing photoionization or chemical change falls within this tim

122 ectron removal caused by ionizing radiation, photoionization, oxidation, or photosensitization.

123 in aqueous perchlorate glasses, the primary photoionization pathway involves base ionization followe

124 We describe the use of photoionization (PI) mass spectrometry (MS) for high-spe

125 In this study, photoionization (PI) was evaluated as the ion source for

126 e primarily focus on the mechanism of direct photoionization (PI), as compared to the dopant mechanis

127 Analysis of the data establishes a threshold photoionization potential for NM of 4.5 +/- 0.2 eV, whic

128 is proposed and benchmarked to describe the photoionization process and to do the retrieval using a

129 he volume of a Rydberg atom to show that the photoionization process only occurs near the nucleus, wi

130 The hydrated electrons also formed in the photoionization process were trapped by dissolved molecu

131 simultaneously excited during the soft x-ray photoionization process.

132 ic compounds in aquatic systems with similar photoionization processes.

133 ation at all four wavelengths, though 267-nm photoionization produces the highest yield of dopamine f

134 The photoionization products, 2AP radicals, rapidly oxidize

135 tals due to the rotational dependence of the photoionization profiles.

136 The photoionization signal intensity increases linearly with

137 e study makes a strong case for the use of a photoionization source as an alternative to the radioact

138 ed differential mobility spectrometer with a photoionization source interfaced to a gas chromatograph

139 ential mobility spectrometer equipped with a photoionization source operating at atmospheric pressure

140 ementing lab-scale electron impact and laser photoionization studies for a wide variety of reactors,

141 aging is presented, allowing isomer-resolved photoionization studies on isomerically mixed samples.

142 A liquid chromatography atmospheric pressure photoionization tandem mass spectrometric method was dev

143 e liquid chromatography-atmospheric pressure photoionization-tandem mass spectrometry (UPLC-APPI-MS/M

144 Photoionization techniques (APPI and APLI) are important

145 mage induced by ionizing radiation; however, photoionization threshold energies of nucleic acid compo

146 Tunable synchrotron-sourced photoionization time-of-flight mass spectrometry (PI-TOF

147 (NTD) in conjunction with thermal-desorption photoionization time-of-flight mass spectrometry (TD-PI-

148 approach utilizing "soft" vacuum ultraviolet photoionization to achieve unprecedented chemical charac

149 ncentration of PAHs desorbed and detected by photoionization ToF-MS to the concentration of PAHs adso

150 zed in the gas-phase by atmospheric pressure photoionization using a 10 eV vacuum ultraviolet krypton

151 nslational spectroscopy coupled with product photoionization using tunable VUV synchrotron radiation.

152 nization and desorption atmospheric pressure photoionization was examined for food and pharmaceutical

153 Atmospheric pressure photoionization was selected as the primary ionization m

154 re is monitored in time by using synchrotron-photoionization with a double-focusing mass spectrometer