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LCLS X-ray Pump Probe (XPP) RSS feed

The X-ray pump-probe (XPP) instrument predominantly uses ultrashort optical laser pulses to generate transient states of matter which are subsequently probed by hard X-ray pulses from the LCLS. The X-ray pulses help to reveal structural dynamics initiated by the laser excitation at the timescale of atomic motions in solid, liquid and gaseous specimens.

LCLS XPP Hutch

News Feature

The research team was able to watch energy from light flow through atomic ripples in a molecule. Such insights may provide new ways to...

View of the The X-ray Pump Probe instrument at SLAC’s Linac Coherent Light Source.
Press Release

Extraordinarily precise measurements -- within millionths of a billionth of a second and a billionth of a hair's breadth -- show this ‘electron-phonon coupling’...

Illustration of a laser beam triggering atomic vibrations in iron selenide
News Feature

The method dramatically reduces the amount of virus material required and allows scientists to get results several times faster.

Surface structure of the bovine enterovirus 2
Press Release

Just as Schroedinger's Cat is both alive and dead, an atom or molecule can be in two different states at once. Now scientists have...

Illustration of a molecule splitting into two Schroedinger's Cat states
Press Release

Scientists have revealed never-before-seen details of how our brain sends rapid-fire messages between its cells using SLAC's X-ray laser.

Image - This illustration shows a protein complex at work in brain signaling. Its structure, which contains joined protein complexes known as SNARE and synaptotagmin-1, is shown in the foreground. (SLAC National Accelerator Laboratory)
Press Release

Scientists for the first time tracked ultrafast structural changes, captured in quadrillionths-of-a-second steps, as ring-shaped gas molecules burst open and unraveled.

Image - This illustration shows shape changes that occur in quadrillionths-of-a-second intervals in a ring-shaped molecule that was broken open by light. (SLAC)
News Feature

An experiment at SLAC’s X-ray laser provides new insight into the ultrafast motions of a muscle protein in a basic biochemical reaction.

Computerized rendering of 3-D structure of myoglobin. The jagged green line represents a pulse of la
News Feature

A team led by Stanford University scientists is using software to breathe new life into results from past biological experiments at SLAC’s X-ray laser.

This illustration shows Tiny crystallized biomolecules in a liquid solution (right) are streamed into X-ray laser pulses (shown as a white beam) in this illustration of crystallography at SLAC's Linac Coherent Light Source X-ray laser.
News Feature

SLAC study of tiny nanocrystals provides new insight on the design and function of nanomaterials

Image - In this illustration, intense X-rays produced at SLAC's Linac Coherent Light Source strike nanowires to study an ultrafast "breathing" response in the crystals induced quadrillionths of a second earlier by pulses of optical laser light.
News Feature

Developed at SLAC’s LCLS, it could also yield new information from hard-to-study samples in materials science, chemistry and other fields.

Image - These charts show (a) the energy profile of two electron bunches that are separated by about 6 picoseconds, which are later stimulated to emit (b) two X-ray pulses separated by femtoseconds.
News Feature

An experiment at SLAC provided the first fleeting glimpse of the atomic structure of a material as it entered a state resembling room-temperature superconductivity...

Image - In a high-temperature superconducting material known as YBCO, light from a laser causes oxygen atoms to vibrate between layers of copper oxide in a way that favors superconductivity.
News Feature

Scientists at the Department of Energy’s SLAC National Accelerator Laboratory are combining the speed and precision of robots with one of the brightest X-ray...

This illustration shows the components in an experimental setup used in crystallography experiments at SLAC's Linac Coherent Light Source X-ray laser.