Latest News----Institute of Modern Physics

Researchers Report Fabrication and Functioning of Magnetically Gated PET Nanochannel

Gated nanochannels extensively exist in biological system, functionalized as reporters to specific external stimuli or transporters of signaling messengers and molecules, such as voltage gated ion channels and ligand gated channels. Lately, researchers at the Institute of Modern Physics, Chinese Academic of Sciences demonstrated a novel magnetically gated PET nanochannel with magnetic sensors i...Gated nanochannels extensively exist in biological system, functionalized as reporters to specific external stimuli or transporters of signaling messengers and molecules, such as voltage gated ion ...

| 03 07, 2020

Scientists Report Heavy Ion Transfer in Charged vdW Cluster for the First Time

It has been recognized that proton transfer is crucial to many chemical and biological processes. As these processes are known to be relevant to biophysics and radiation therapy, a question arises whether a massive ion could be transferred in biochemical processes and lead to fragmentation. Published in Nature Communications on June 12th, a new study helps address the above questions.Since the discovery of the double helix form of DNA and the hypothesis of DNA mutation induced by proton transfer more than 50 years ago, it has been recognized that proton transfer is crucial to m...

| 12 06, 2020

First identification of nuclear fragments of 78Kr projectile fragmentation reaction at RIBLL2

The projectile fragmentation experiment was recently performed at the Heavy-Ion Research Facility in Lanzhou ( HIRFL ). With the help of these high-powered detectors and the precise Bρ determination method, the fragments produced by the fragmentation of 78Kr at 300 MeV/u were identified clearly at RIBLL2, which has a full momentum acceptance of ± 4.5%.Recently, the projectile fragmentation experiment of 78Kr at 300MeV/u was performed at the Heavy-Ion Research Facility in Lanzhou (HIRFL). It is the first time that the fragments with a mass number...

| 14 05, 2020

Researchers Apply Gamow Shell Model to Analyze Two-neutron Halo Structure of 31F

Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences and Peking University lately applied the Gamow shell model to analyze the two-neutron halo structure of 31F. A powerful tool to describe halo nuclei is the Gamow shell model (GSM), which is an extension of the standard shell model of well-bound nuclei. According to GSM calculations, 31F is a two-neutron ha...Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences and Peking University lately applied the Gamow shell model to analyze the two-neutron halo structure of 31F...

| 12 05, 2020

A New Measurement of Charge-Exchange Reaction Helps Us Understand Core-Collapse Supernovae

Some massive stars end their life as core-collapse supernovae (CCSNe), which is the most energetic and mysterious event in the universe. A large amounts of energy will be released during CCSNe and the whole galaxy can be lighted up. Decades of efforts have been devoted to understanding CCSNe while some open questions still remain. One of the important physical inputs in CCSNe simulations is the...Researchers from many institutions, including the Institute of Modern Physics of the Chinese Academy of Sciences, have lately made progress in the study of the electron-capture rates of the 93Nb by...

| 23 03, 2020

Scientists Reveal Impact of New Masses of Nuclei on X-ray Bursts

Recently, significant progress was made in understanding the impact of new masses of nuclei on the X-ray bursts by an international nuclear astrophysical team. Type I X-ray bursts are the most frequent types of thermonuclear stellar explosions in the Galaxy. Nuclear masses are key nuclear physics inputs in rp-process, and the accuracy is vital for soundly understanding the mechanism of X-ray bu...Recently, significant progress was made in understanding the impact of new masses of 27P and 27S on the X-ray bursts by an international nuclear astrophysical team.
　　This work was led by XU Xinx...

| 12 03, 2020

Researchers Prove Tensor Force Invalid in Skyrme Density Functionals

The tensor force is a hot topic in nuclear physics, which affects the shell evolution. Based on the derived tensor force in momentum space via partial-wave expansion, researchers demonstrated such a tensor force invalid, and hence the widely employed tensor force of the Skyrme interactions invalid. Researchers then proposed a new scheme and accordingly built two new Skyrme interactions—IMP1 an...The tensor force is a hot topic in nuclear physics, which affects the shell evolution. Moreover, the short-range correlation, which is dominated by the strong tensor force between unlike nucleons, ...

| 05 02, 2020

Isotope Laboratory of Gansu Province Established

The Isotope Laboratory of Gansu Province, which centers on isotopes and related technologies, was unveiled on January 20th and officially established. The laboratory is operated and managed by IMP. According to the prediction of scientists, there are more than 8000 isotopes and so far about 3200 kinds have been found.The Isotope Laboratory of Gansu Province, which centers on isotopes and related technologies, was officially established on January 20th in Lanzhou .
　　Located in the Lanzhou New Area, the labora...

| 21 01, 2020

Scientists Reveal Enzymatic Hydrolysis Process of Alkali Pretreated Straw

Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences have made progress in the study of enzymatic hydrolysis process of alkali pretreated straw lately. The research provides insight into the structural changes and visualization of the hydrolysis process. These findings will help to design plant cell structures and plant tissues at the organization level, and...Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences have made progress in the study of enzymatic hydrolysis process of alkali pretreated straw lately.
　　Lign...

| 17 01, 2020

A New Operation Mode of HIRFL Tested Successfully

On January 7, the Heavy Ion Research Facility in Lanzhou (HIRFL) provided the beam for users by the combination of three different types of accelerators. By the new operation mode, it is possible to obtain highly-charged heavy ion beams with the energy higher than other modes operated previously. The new operation mode will greatly improved the efficiency and capacity of HIRFL.On January 7, the Heavy Ion Research Facility in Lanzhou (HIRFL) provided the Bi55+ beam for users by the combination of three different types of accelerators.
　　This is the first attempt in the ...

| 10 01, 2020