53 4 2004 4 100023290Π2004Π53 (04) Π1027207 ACTA PHYSICA SINICA Vol 53,No 4,April,2004 ν 2004 Chin Phys Soc A 2 + 3 g (,, 230026) (, 230031) (2003 6 10 ;2003 7 9 ) 360155 nm N 2 O (3 + 1) X 2 3Π2,1Π2 (000) A 2 + NO + 278 328 nm (PHOFEX) A 2 + X 2 PHOFEX A 2 + : A 2 +,, Fermi, PACC: 3320L, 3310G, 3520P 11 (020) (100) [1,2 ] O + ( 4 S) + N 2 ( X 1 + ) NO + ( X 1 +, v) + N( 4 S) + 1110 ev (1) [1 ] [2 ], ( A 2 + ) [16, ] 2 ( TEFP) [17 ] ( A 2 + ) A 2 + [3 17, ] A 2 + A 2 + 1974 Callomon Creutzberg [3 ] A 2 + X 2 A 2 +, A 2 + (300) A 2 + [3 10 ] A 2 +,, X 2 N 2 O (3 + 1) 2 Renner2Teller Fermi, Larzilliere (FIBLAS) NO + A 2 + (010), [11 15 ] X 2 (REMPI) 278 328 nm A 2 +,A 2 + NO + (PHOFEX) A 2 + 3 ( : G1999075304) ( :20273063) g Tel :055123602323, E2mail :slliu @ustc edu cn 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved
1028 53 21 31 3111 ( TOF), [18,19 ] 200 Pa,N 2 O 20 % N 2 OΠHe [3,4,11,12,16 ] Penning 9 ] 015 mm [10 ] [17 ] 200 s 2 5 cm 70 15 LΠs (2X2 70 2X215, ) 1500 LΠs ( F2400, REMPI ) ( ) 1 (a) ( 360155 nm) 9 10-5 1 10-5 Pa TOF 1 (a) ( ), 4 10-4 2 10-4 ( 3 mj) Pa ( f = 30 cm), Nd : YAG( PRO2190,Spectra Physics NO + [20 22 ] ) (532 nm 1 % 470 mj),n 2 O (3 + 1) REMPI (PRSC2LG218,Sirah ) 3 P 1 (000) KD 3 P 30 cm, 2, X 2 3Π2 (000) X 2 1Π2 (000) 360155 nm PHOFEX 3 mj ( PRSC2LG224,Sirah 360155 nm (3 + 1) REMPI, ) KD 3 P,, 60 cm, X 2 3Π2,1Π2 (000) 278 328 nm 1 2 mj AΠD ( SR245, Stanford Research System ), Ne 32 cm TOF, (MCP) MCP Boxcar (SR250,Stanford Research System ) 30 Boxcar Ne TOF, (TDS380,Teltronix ), [5 1 (360155 nm) (a) (305182 nm) (b) (c) TOF 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved
4 : A 2 + 1029, NO + 10 ns,, X 2 3Π2,1Π2 (000), A 2 +,NO + NO + 1 (b) ( 305182 nm) 1 (c) TOF 1 (c) A 2 + 1 (a), (b) NO + NO + ( PHOFEX ), 1 (c) NO + A 2 + 2 NO + PHOFEX 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved
1030 53 3121 PHOFEX, A 2 + N2O ( 1 ) ( 2 ) N2N ( 3 ), = 1345152 cm - 1, 2 = 61411 cm - 1, 3 = 245117 cm - 1 [3] 3 2 1 4 2 ( v 1, v 2, v 3 ) ( v 1-1, v 2 + 2, v 3 ), ( v 1, v 2, v 3 ) ( v 1 + 2, v 2, v 3-1) Fermi Fermi :2 v 1 + v 2 + 4 v 3 = P ( ) P (vibrational cluster) Fermi Dunham 3259710, [23 ], P P Fermi v 1, v 2, v 3 ^H eff v 1, v 2, v 3 = gg( v) = i v i + d i i 2 + ij v i + d i ij 2 v j + d j 2, ^H eff i ij, d i Fermi v 1, v 2, v 3 ^H eff v 1 + 1, v 2-2, v 3 = 1 2 2 K 122 v 2 2 ( v 1 + 1), v 1, v 2, v 3 ^H eff v 1 + 2, v 2, v 3-1 = 1 2 2 K 113 v 3 ( v 1 + 1) ( v 1 + 2), K 122 K 113 1, Fermi ( v 1, v 2, v 3 ) ( v 1-2, v 2 + 4, v 3 ), ( v 1, v 2, v 3 ) ( v 1, v 2 + 4, v 3-1) 3 v 3 = 3 3, 1 3, K 113 = 0 2 328 278 nm ( 30500 PHOFEX 36000 cm - 1 ) NO + PHOFEX 2 A 2 + ( P[ i ]) X 2 (000) 1 NO + PHOFEX Πcm - 1 3066215 3078315 3091716 3138611 3151912 3175012 3188410 3176618 3190016 3186912 3200219 3198017 3211415 3210718 3224019 3246318 3269710 3283016 3296510 3309910 3297712 3311017 3317217 3330710 3327414 3340810 3341711 3355214 3356210 3369616 3375814 3389217 3398810 3412011 3414119 3427614 3425816 3439312 3427810 3441310 3483515 3496916 3536915 3550319 3552913 3566319 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved [16 ] 3066510 3077618 3090910 1) 4[1] (000) F 1 4[4] (000) F 2 4[4] (000) F 1 5[4] (000) F 2 5[4] (000) F 1 6[1] (000) F 2 6[1] (000) F 1 6[2] (000) F 2 6[2] (000) F 1 6[3] (000) F 2 6[3] (000) F 1 6[5] (000) F 2 6[5] (000) F 1 6[6] (000) F 2 6[6] (000) F 1 7[3] (000) F 2 7[3] (000) F 1 7[6] (000) F 2 7[6] (000) F 1 8[1,2 ] (000) F 2 8[1,2 ] (000) F 1 8[3] (000) F 2 8[3] (000) F 1 8[6] (000) F 2 8[6] (000) F 1 8[8] (000) F 2 8[8] (000) F 1 8[9] (000) F 2 8[9] (000) F 1 9[1] (000) F 2 9[1] (000) F 1 9[6] (000) F 2 9[6] (000) F 1 9[9] (000) F 2 9[9] (000) F 1 10[1 ] (000) F 2 10[1 ] (000) F 1 10[4 ] (000) F 2 10[4 ] (000) F 1 10[5 ] (000) F 2 10[5 ] (000) F 1 11[4 ] (000) F 2 11[4 ] (000) F 1 12[2 ] (000) F 2 12[2 ] (000) F 1 12[8 ] (000) F 2 12[8 ] (000) F 1 1) F 1 X 2 3Π2 ( 000), F 2 X 2 1Π2 (000)
4 : A 2 + 1031 P A 2 + i 2 A 2 + P[ i ] 47 44 X 2 3Π2 (000) X 2 1Π2 (000), 2 A 2 + P[ i ], ( 3 + 1) REMPI 2 Fermi X 2 3Π2 (000) X 2 1Π2 (000) 2 Scheper [22 ] A 2 + Fermi X 2 2 13318 2,A 2 + 1 110 cm - 1 [3,,22] 2 Fermi 1 K 122 2116 115 cm - 1 1 PHOFEX, F 1 X 2 3Π2 (000), F 2 A 2 + X 2 1Π2 (000) 47 31 2 2 A 2 + P = 6 cm - 1 4 12 X 2 A 2 + X 2 (000) P A 2 +, P A 2 + [4 ] A 2 + X 2 2, 1 Fermi 2 A 2 + P[ i ] P[ i ] G( v) obs Πcm - 1 G( v) cal Πcm - 1 G( v) obs - G( v) cal Πcm - 1 Π% 4[1] 4[4] 5[4] 6[1] 6[2] 6[3] 6[5] 6[6] 7[3] 7[6] 8[1,2 ] 8[3] 8[6] 8[8] 8[9] 9[1] 9[6] 9[9] 10[1 ] 10[4 ] 10[5 ] 11[4 ] 12[2 ] 12[8 ] 243215 268716 328912 365410 367016 377219 388415 401019 436710 460016 486910 488017 507710 517810 532214 546616 566217 589011 604614 616312 618310 673916 727319 743319 242912 269115 328811 365417 366911 377210 388119 401219 437216 459816 486716 (8[1]) 487119 (8[2]) 488119 507013 518114 531813 546017 566314 589217 604915 615714 618614 674510 727117 743216 313-319 111-017 115 019 216-210 - 516 210 114-219 - 112 617-314 411 519-017 - 216-311 518-314 - 514 212 113 001 (100) 200(9711) 210(9218) 021(9816) 060(7712), 140 (2118) 140(6414), 060 (2210), 220 (1314) 220(8118), 140 (1317) 300(9612) 150(4710), 070 (3015), 230 (2117) 310 (9014), 230 (910) 080 (5612), 160 (3811), 240 (515) 041 (9216), 121 (714) 002 (100) 240 (4617), 160 (3115), 320 (1615), 080 (511) 320(7617), 240 (1712) 400(9515) 090(4511), 170 (4413), 250 (1010) 170(3812), 250 (2515), 330 (2511), 090 (1010) 410(8817), 330 (1014) 180 (4717), 0100 (3417), 260 (1610) 0100 (4619), 260 (3814), 340 (1115) 141(6810), 061 (1918), 221 (1211) 0110 (4516), 270 (3314), 350 (1911) 081(6010), 161 (3514) 122 (9111), 042 (616) 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved
1032 53 3 A 2 + [16 ] [3] [17 ] [15 ] 1 138019 311 1358 1345152 1360 15 2 62713 118 61411 3 243310 714 245117 2470 15 11-810 019-5182 22-014 012-114 33-1118 410 12-1311 111 23-316 019 K 122 T 0 2116 115 28230 1 28229194 2 X 2 3Π2,1Π2 13318 110 132136 130 :1) cm - 1 2) [15 ] 41 A 2 + N 2 O (3 + 1) REMPI X 2 3Π2,1Π2 (000) A 2 +, 278 328 nm NO + PHOFEX Fermi 47 2 44 PHOFEX A 2 + [1] Burley J D, Evin K M, Armentrout P B 1987 J Chem Phys 86 1944 [2] Komiha N 1994 J Mol Struct 306 313 [3] Callomon J H, Creutzberg F 1974 Philis Trans Roy Soc Lond Ser A 277 157 [4] Aarts J F M, Callomon J H 1982 Chem Phys Lett 91 419 [5] Fellows C E, Vervloet M 2001 Chem Phys 264 203 [6] Tsuji M, Maier J 1988 Chem Phys 126 435 [7] Imamura T, Imajo T, Koyano I 1995 J Phys Chem 99 15465 [8] Tokue I, Kudo T, Ito Y 1992 Chem Phys Lett 199 435 [9] Ibuki T, Sugita N 1984 J Chem Phys 80 4625 [10] Tokue I, Kobayashi M, Ito Y 1992 J Chem Phys 96 7458 [11] Lerme J, Abed S, Larzilliere M et al 1986 J Chem Phys 84 2167 [12] Lerme J, Abed S, Holt R A et al 1983 Chem Phys Lett 96 403 [13] Larzilliere M, Gragued K, Lerme J et al 1987 Chem Phys Lett 134 467 [14] Abed S, Broyer M, Carre M et al 1983 Chem Phys 74 97 [15] Larzillere M, Jungen C H 1989 Mol Phys 67 807 [16] Frey R, Kakoschke R, Schlag E W 1982 Chem Phys Lett 93 277 [17] Frey R, Gotchev B, Poatman W B et al 1978 Chem Phys Lett 54 411 [18] Zhang L M, Chen J, Xu H F et al 2001 J Chem Phys 114 10768 [19] Zhang L M et al 1999 Acta Phys Sin 48 1204 (in Chinese) [ 1999 48 1204] [20] Michael G, Wallace S C 1991 J Chem Phys 95 2336 [21] Patsilinakou E, Wiedmann R T, Fotakis C et al 1989 J Chem Phys 91 3916 [22] Scheper C R, Kuijt J, Buma WJ et al 1998 J Chem Phys 109 7844 [23] Bernath P F, Dulick M, Field R W 1981 J Mol Spectrosc 86 275 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved
4 : A 2 + 1033 The spectral a ssignment for the A 2 + transition of ions 3 X 2 Xu Hai2Feng Guo Ying Li Qi2Feng Dai Jing2Hua Liu Shi2Lin g Ma Xing2Xiao ( Open Laboratory of Bond Selective Chemistry, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China) Liang Jun Li Hai2Yang ( Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China) (Received 10 June 2003 ; revised manuscript received 9 July 2003) Abstract The spectra of ions in A 2 + state have been investigated Pure parent ions, in the X 2 3Π2,1Π2 (000) state, were prepared by (3 + 1) multiphoton ionization of jet2cooled N 2 O molecules using a laser beam at 360155 nm By introducing another laser, the parent ions were excited to the predissociative A 2 + state, and the fragment NO + was detected by a time2of2 flight mass spectrometer The NO + photofragment excitation (PHOFEX) spectra were recorded by scanning the dissociation laser in the wavelength range of 278 328 nm The PHOFEX spectra could be attributed completely to the A 2 + X 2 transition of, in which most vibronic bands were observed for the first time By considering the Fermi resonance between the 1 and 2 modes, the spectra were assigned, and the spectral constants, such as vibrational frequencies, anharmonic constants, and Fermi interaction constant, were obtained with relatively high reliability and precision Keywords : ions A 2 + PACC: 3320L, 3310G, 3520P state, PHOFEX, Fermi resonance, spectral constants 3 Project supported by the State Key Development Program for Basic Research of China ( Grant No G1999075304) and the National Natural Science Foundation of China ( Grant No 20273063) g Corresponding author Tel :055123602323, E2mail :slliu @ustc edu cn 1995-2005 Tsinghua Tongfang Optical Disc Co, Ltd All rights reserved