What does Ltq stand for in mass spec?

LTQ XL Linear Ion Trap Mass Spectrometer

Mass Range 15 to 200 m/z, 50 to 2000 m/z, 200 to 4000 m/z
Hertz 50/60 Hz
Voltage 230 V
Description LTQ XL Linear Ion Trap Mass Spectrometer
Weight (Metric) 120 kg

What is ion trap mass spectrometry?

An ion trap mass spectrometer functions both as a mass spectrometer of considerable mass range and variable mass resolution and as an ion store in which gaseous ions can be confined. Unlike other mass spectrometers that operate at pressures <10−6 Torr, the ion trap operates at 1 mTorr of helium.

How do ion trap qubits work?

Ions, or charged atomic particles, can be confined and suspended in free space using electromagnetic fields. Qubits are stored in stable electronic states of each ion, and quantum information can be transferred through the collective quantized motion of the ions in a shared trap (interacting through the Coulomb force).

What does Ttq mean?


Acronym Definition
TTQ To the Queen (toast)
TTQ Trying to Quit
TTQ Task Team on Quality
TTQ Tryptophan Tryptophyl quinone

What is the resolution of a mass spectrometer?

In mass spectrometry, resolution is defined as the ability to separate ion beams that differ in m/e ratio. It is most commonly calculated as m/Δm, where m is the nominal mass (actually m/e) for a particular peak in the mass spectrum, and Δm is peak width at 10 or 50% of the peak height.

Why is high resolution mass spectrometry better?

The most significant advantage of HR-MS techniques in the analysis of complex mixtures is their ability to provide high peak capacity and high measurement throughput necessary to assign accurate molecular weights and, thus, molecular formulas to the individual components, without the need for prior separation.

How many qubits are useful?

The best known algorithm for simulating an arbitrary random quantum circuit requires an amount of time that scales exponentially with the number of qubits, leading one group to estimate that around 50 qubits could be enough to demonstrate quantum supremacy.

What is a linear ion trap?

In a linear ion trap, ions are confined radially by a two-dimensional radio frequency (RF) field, and axially by stopping potentials applied to end electrodes. Linear ion traps have high injection efficiencies and high ion storage capacities.

What are the limitations of a 3D ion trap?

With a continuous source, such as one utilizing electrospray ionization (ESI), ions generated while the 3D trap is processing other ions are not used, thereby limiting the duty cycle. Furthermore, the total number of ions that can be stored in a 3D ion trap is limited by space charge effects.

What is the difference between linear ion trap and Orbitrap mass spectrometer?

A linear ion trap uses a set of quadrupole rods coupled with electrodes on each end to facilitate the ion trapping. This configuration gives the linear ion trap a dual functionality—it can be used as a quadrupole mass filter or an ion trap. An orbitrap mass spectrometer consists of an inner spindle-like electrode and an outer barrel-like electrode.

How to think about ion trajectories inside a lit Trap?

Since the equation of ion motion along the x-axis of the LIT fits the form of the Mathieu equation, we can utilize known characteristics of said equation to think about ion trajectories inside the trap. The solutions to the Mathieu equation can be characterized as either “bounded” or “unbounded”, based on how their amplitudes evolve over time.