1. Select the Lines tab from the main menu.


2. Enter the Element from the periodic table in the top box.


3. Enter the starting end ending wavelength values in ångstrom in the boxes below to search for line transitions of this chemical element. The BRASS database will return data values for spectral lines of neutral atoms and ions of the element. Please keep your wavelength range queries limited to at most a few hundred ångstroms to avoid loading massive amounts of atomic data at once in the BRASS Lines Interface. Very large queries can delay the BRASS Data Server and decrease its reponse times for other users.


4. Select the radio button table in case you would like to present the atomic data values in a table. Select the plot button in case you would like to view a plot comparing the log(gf) values from various sources searched in BRASS.


5. Select the wavelength radio button below for sorting the line transitions with increasing wavelength. Select the sigmaLoggf button line for sorting the standard deviation of the log(gf) values from various sources searched in BRASS in increasing order.


6. Press the Search lines button below and wait 10 to 30 seconds depending on the number of line transitions in the requested wavelength range. The page will already start loading while all data is still loading/arriving, and you can scroll down the page while more data is being listed on the screen.





The query will return on the screen:





All information in the HTML page can be saved to the ASCII table format by pressing the Save selected lines button at the top of the page. By default all lines are saved as marked by the check-boxes at the left hand side of the HTML page. De-select any of the lines by mouse clicking their check-boxes.






Select the ASCII text with the mouse or use Select all from your browser pull-down menu for copying and saving in a text file. The columns with the atomic data values of the copied text are all separated by the tab character. The information you have saved in this text file can next be loaded in the columns format of any mainstream spreadsheet application and used for further data processing.