[Set Prohibited Masses] dialog box

Set prohibited masses.

Insert prohibited masses to protect the detector (EM) from large signals caused by Oxygen, Argon, Nitrogen, Hydrogen, and other polyatomic ions.

When it is installed, the following default values are configured.

Lenses	Mode	Prohibited Masses
x-Lens/ s-Lens common	No Gas - Hot Mode	16 17 18 19 40 41
	No Gas - Cool Mode	16 17 18 19
	H2 Gas Mode	16 17 18 19
	He Gas Mode	16 17 18 19

Lenses	Mode	Prohibited Masses
x-Lens/ s-Lens/m-Lens common	No Gas - Hot Mode	16 17 18 19 40 41
	No Gas - Cool Mode	16 17 18 19
	H2 Gas Mode	16 17 18 19
	He Gas Mode	16 17 18 19
	3rd Cell Gas	16 17 18 19
	4th Cell Gas	16 17 18 19

Setup Table

[Mode] column

Displays each tune mode.

[Masses] column

Displays the specified prohibited masses. They can be changed (see CAUTION note below).

[OK]

Applies the settings.

[Cancel]

Cancels the settings.

 

Do not change the prohibited masses setting except for specific applications, such as measurement of ⁴⁰Ca with cool plasma conditions).

 

If under normal plasma conditions, large signals will cause the rapid deterioration of the detector (EM).

To Get Here

• Click and select [Properties] from the context menu on [Detector] in the Dashboard Pane, and then click [Edit] in [Prohibited Masses].
• Click and select [Prohibited Masses] from the context menu on [Detector] in the Dashboard Pane.
• Click [Edit] in [System] - [Hardware] - [Detector] - [Prohibited Masses] in the [Settings] dialog box.

See Also

• Detector
• Dashboard Pane
• [ICP-MSICP-QQQ MassHunter] window