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Manipulating 2D Data for REMPI Spectrum Analysis

This instruction provides a rough analysis of Arnar's data for deriving REMPI spectrum. It includes steps for creating tables, matrices, and contour plots, and removing unwanted elements. Additionally, it explains how to obtain the H35Cl spectrum by summing data points within a specific range.

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Manipulating 2D Data for REMPI Spectrum Analysis

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  1. HCl, Arnar´s data, 1) INSTRUCTION concerning manipulation of 2D data to derive REMPI spectrum: 2) Rough 1st Analysis of Arnars data See: Agust, heima,....HCl20600-20820massdata-240108vhw.pxp Agust,www, ...HCl-Arnar-250108akvhw.ppt

  2. INSTRUCTION concerning manipulation of 2D data to derive REMPI spectrum: • To make rempi spectrum, using summed up intensities: • Make table, for example wave601 – wave100 • Make a matrix with 0´s, for example: make/O/N=(500,400) rempi2=0 • New Table for rempi2 • Copy content of all waves (wave601 – wave1000) to matrix rempi2: • -> CtrlA->CtrlC (in wave table) ->CtrlA->CtrlV (in matrix table) • 5) Make data points positive: rempi2=-rempi2 • 6) Make contour plot: windows -> new-> Contour Plot...ZWave: rempi2, • XWave: calculated, YWave: Wavenumber3 • 7) Remove 0´s and numbers from Contor plot: Graphs-> Modyfy contour • appearance-> Labels (right) ->none-> Do it:

  3. Expanded Cl+ and HCl+ region:

  4. To obtain H35Cl spectrum: sum over points 316 – 321 (see figure above): • Make matrix for 6 points (i.e 316-321): make/O/N=(6,400) rempi2a=0 • Edit rempi2a • Copy lines for pnt = 316- 321 in rempi2 matrix • Paste to rempi2a matrix • Transpose (flip) rempi2a matrix: MatrixTranspose rempi2a • Make wave equally long as the rempi2a (400) to contain the intensity sum:Make/N=400/D rempi2aa • AppendToTable rempi2aa • Summing up: • rempi2aa=rempi2a[x][0]+rempi2a[x][1]+ rempi2a[x][2]+ rempi2a[x][3]+rempi2a[x][4]+ rempi2a[x][5] • Display rempi2aa vs Wavenumbers3:

  5. 20650-20690 Waves 601-1000 H35Cl+

  6. H35Cl+ 20600-20620 Waves 1-200

  7. 20600-20620 Waves 1-200 H35Cl+ Summed REMPI spectrum Pnts 344-346 hv(LASER)

  8. 20615-20655 Waves 201-600 H35Cl+

  9. 20615-20655 Waves 201-600 H35Cl+

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