Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations.
Stopping molecular rotation using coherent ultra-low-energy magnetic manipulations.
复制标题
DOI:
10.1038/s41467-022-29830-3
复制
发表时间:
2022-04-28
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Rotational motion lies at the heart of intermolecular, molecule-surface chemistry and cold molecule science, motivating the development of methods to excite and de-excite rotations. Existing schemes involve perturbing the molecules with photons or electrons which supply or remove energy comparable to the rotational level spacing. Here, we study the possibility of de-exciting the molecular rotation of a D2 molecule, from J = 2 to the non-rotating J = 0 state, without using an energy-matched perturbation. We show that passing the beam through a 1 m long magnetic field, which splits the rotational projection states by only 10−12 eV, can change the probability that a molecule-surface collision will stop a molecule from rotating and lose rotational energy which is 9 orders larger than that of the magnetic manipulation. Calculations confirm that different rotational orientations have different de-excitation probabilities but underestimate rotational flips (∆mJ0), highlighting the importance of the results as a sensitive benchmark for further developing theoretical models of molecule-surface interactions. Manipulating the rotational motions of molecules may provide a tool for controlling chemical processes. Here the authors demonstrate that the rotation of a D2 molecule can be stopped, upon collision with a metal surface, by a magnetic field that affects the rotational levels to a much smaller extent than the energy difference upon de-excitation.
登录
查看更多内容
影响因子:
2.9
作者:
Cantin, J. T.;Alexandrowicz, G.;Krems, R., V
通讯作者:
Krems, R., V
影响因子:
4.4
作者:
MOWREY, RC;KROES, GJ
通讯作者:
KROES, GJ
DOI:
10.1073/pnas.0800401105
发表时间:
2008-09-02
影响因子:
11.1
作者:
Perkins, Bradford G., Jr.;Nesbitt, David J.
通讯作者:
Nesbitt, David J.
影响因子:
3.3
作者:
Al Taleb, Amjad;Farias, Daniel
通讯作者:
Farias, Daniel
影响因子:
56.9
作者:
Hou, H;Gulding, SJ;Auerbach, DJ
通讯作者:
Auerbach, DJ